you are studying for your final exam of the semester. up to this point, you recieved 3 exam scores of 76%,99%, and 86%. to recieve a grade of a in the class you must average exam score between 90% and 100% for all 4 exams including the final. find the widest range of scores that you can get on the final exam in order to recieve a grade of a for the class. use interval notation
a) [88,89]
b) [90,100]
c) [99,100]

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

16. you're planning to buy a boat, a motor, and some miscellaneous boating equipment. the boat costs $325, the motor costs $225, and the equipment costs $79. if you've saved $438 toward these purchases, how much more do you need to save? a. $181 b. $281 c. $291 d. $191

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =