n=9
step-by-step explanation:
7 times a number = 7n
decreased by 13 = 7n-13
same as is =
5 times the number = 5n
increased by 5 = 5n+5
7n-13 = 5n+5
2n=18
i think it would be c
mark brainliest if im right
answer: -10
s(t) = 1 - 10t
s(x) = 1 - 10x
s(x + h) = 1 - 10(x + h)
= 1 - 10x - 10h
s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)
= 1 - 10x - 10h - 1 + 10x
= -10h
= -10