Ray wants to buy a hat that costs $10 and some shirts that cost $12 each. The sales tax rate is 6.5%. The expression 0.065(10+12s) can be used to determine the amount of sales tax that Ray will pay on his entire purchase. Expand the expression

0.65 + 0.78s

Step-by-step explanation:

From the question, we are informed that Ray wants to buy a hat that costs $10 and some shirts that cost $12 each and that the sales tax rate is 6.5%.

We are further told that the expression 0.065(10+12s) can be used to calculate the amount of sales tax that Ray will pay on his entire purchase.

Therefore, expanding the expression will give:

= 0.065(10+12s)

= (0.065 × 10) + (0.065 × 12s)

= 0.65 + 0.78s

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.