This problem is a review of the grammar rules you’ve learned as well as a review of confusing words and frequently misspelled words.

fill in the blank with the most appropriate answer.

1) since i was in charge of the report, i (begun, began, begin) tabulating and analyzing responses.
2) which is the grammatically and mechanically correct option?

i will add up all the salaries and divide by the total number of items. i will give you the mean, but be careful when interpreting the mean because it might be misleading.
i will add up all the salaries and divide by the total number of items, i will give you the mean be careful when interpreting the mean because it might be misleading.
i will add up all the salaries and divide by the total number of items, i will give you the mean, but be careful when interpreting the mean because it might be misleading.

3) sometimes i wish my team leader (were, was) an expert grid maker so everyone could understand her reports.
4) ask brian or (me, myself) whether our conclusions are bias-free.

fill in the blank with the correct word.

5) the research jeanne is doing will take (precedence, precedents) over the research linda is doing.

fill in the blank with the correct word.

6) i was (formerly, formally) a full-time researcher before i was hired for this position.
7) which word is spelled correctly?

argument
arguement
argement

8) which word is spelled correctly?

recommendation
recomendation
reccomendation

9) which word is spelled correctly?

riceipt
receipt
reciept

1) began

2) I will add up all the salaries and divide by the total number of items, I will give you the mean, but be careful when interpreting the mean because it might be misleading.

3) was

4) me

5) precedence

6) formally

7) Argument

8) Recommendation

9) Receipt

this is an outline for the decisions that frankie is going to make

opportunity cost

willingness to buy

price or quality

of course, there could be many economic strategies that should be considered important while making decision. opportunity cost is the foremost significant factor while considering any economic option. when you buy something, you should know how much you are forgoing for this product. indeed, you could buy something different with this measure if you changed your mind. willingness to buy shows how much surplus you are earning while making a decision. it is important because it shows you buy what you want or you buy because you have only limited amount of money. the price or quality can be considered as a general economic option that we are applying while buying something. when you buy something, price or quality could be one of the options. indeed, they define the characteristics of the product.    

mark brainliest!

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals