7). C
8). 60
n = 5(10) + 10
n = 50 + 10
n = 60
9). 17
f(x) = -2x + 7 plug the -5 in for x
f(x) = -2(-5) + 7
= 10 + 7
= 17
10).
The zero normally gives it away for example: 10,20,30,40,50
Remember to use Orders of Operations, or PEMDAS.
6(3 * 6^2 - 7 * 6)
6(3 * 36 - 7 * 6)
6(108 - 42)
6(66)
396
The answer is 396.
1 percent is 18.50 and multiply that by 5 to get 5 percent and you get 92.50 subtract the amounts and you get 1757.5