Question

Given that f(x) = 5x − 10 and g(x) = x + 3, solve for f(g(x)) when x = −1.
−30
0
10
12

Answer 1

i got -12 ._.

Answer 2

Nope I think..

Answer 3

What is f(g(x)) tell me first..

Answer 4

plug in the g(x) equation to every x in the f(x) equation

Answer 5

yep..

Answer 6

\[f(g(x)) = 5(g(x)) -10\]

Answer 7

so

f(-1 + 3) = 5 * -1 + 3 - 10

Answer 8

\[= 5(x+3) - 10 = 5x + 5\]

Answer 9

Keep left hand side as it is..

Answer 10

why 5x + 5 ..

Answer 11

\[f(g(x)) =5x + 15 - 10 = 5x + 5\]

Answer 12

where did u get the 15 tho ?