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

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1. anonymous

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

2. anonymous

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

3. jdoe0001

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

4. anonymous

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.

5. jdoe0001

(a + b) * (c + d) a * c a* d then b * c b * d add them up, simplify

6. anonymous

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

7. jdoe0001

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