Question

Let f(x) = 4x + 3 and g(x) = -2x + 5. Find (f)(g)(5)
a. 23
b. –41
c. –17
d. –5

Answer 1

make x=5 in both f(x) and g(x) then multiply them that's it do it

Answer 2

thats where im confused at, the actual multipling both of them , can u show me ..?

Answer 3

multiply, the same way you would if you were dealing with two digits
pick only 1 term, multiple times all others on the other group
pick another term, and do the same
then simplify

Answer 4

f(x) and g(x) into (f)(g)(5) is multiplying right? You don't mean f(g(x))?
If not, you multiply the equations while inputting 5 for x. 4(5) + 3 times -2(5) + 5.

Answer 5

(a + b) * (c + d)
a * c
a* d

then

b * c
b * d

add them up, simplify

Answer 6

nah i dont mean that , u got it , but okayy i see what yall are sayin , appreciate it

Answer 7

\(\bf f(x) = 4x + 3 \qquad g(x) = -2x + 5
\\ \quad \\
(f)(g)(5)\implies f({\color{brown}{ 5}})\cdot g({\color{brown}{ 5}})\implies (4({\color{brown}{ 5}})+3)\cdot (-2({\color{brown}{ 5}})+5)
\)

even simpler