"Alex has $1.55 in nickels and dimes in her pocket. If she has four dimes less than nickels, how many dimes does she have?" State what the variable in this problem
represents.

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)