Question

if $f(x)=x^2$, $g(x)=5x$, find
$fg(1)$
$\bigcirc$ 10
$\bigcirc$ 25
$\bigcirc$ 50
$\bigcirc$ 5

question 3 1 pts
if $g(x)=5x$, and $h(x)=x+4$, find
$gh(-2)$
$\bigcirc$ 100
$\bigcirc$ 7
$\bigcirc$ 10
$\bigcirc$ 30

Explanation:

Step1: Calculate $g(1)$

$g(1)=5\times1=5$

Step2: Calculate $f[g(1)]$

$f(5)=5^2=25$

Step3: Calculate $h(-2)$

$h(-2)=-2+4=2$

Step4: Calculate $g[h(-2)]$

$g(2)=5\times2=10$

Answer:

For $f[g(1)]$: B. 25
For $g[h(-2)]$: C. 10