PLs state how he messed up I am kind enough to give ou extra points so pls answer my question nicely or I will delete thank you!!

He messed up because he was supposed to multiply 5 the amount of times it shows for the exponent. So he would have to multiply 5 seven times on the top and twice on the bottom.

Step-by-step explanation:

your answer would be b

step-by-step explanation:

costs the what? what is the cost of the pants?

step-by-step explanation:

if it is $10, then the price is 14.

take 40% of the cost, and then add the cost.

40% of 10 = 4

4+10 = 14.