3(2+q)
+ 15 simplified is

3q + 21

Step-by-step explanation: just simplify it

3q+21 simplified, also

q = -7

Step-by-step explanation:

Just multiply the 3 out, then add 15+6 to get 21.

3(2+q)+15 = 0  Subtract 15

3(2+q) = -15 Divide by 3

2+q = -5 Subtract 2

q = -7

you can first factor out the n to get n(1+5). we know that 1+5 is 6, so we just have 6n.

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)