Needing help with pre-calc for business study guide. My teacher doesn't explain it well so I need to know how to answer the questions, not just answers.
1. Evaluate each function at the given value:
a.) if f(x)=11-7x, then find f(-3)
b.) if g(x,y)=3x+ sqrt of(2y+1), then find g(6,12)
c.) if h(x)=4^x + (x+1)/(x-1), then find h(3)

Question

Needing help with pre-calc for business study guide. My teacher doesn't explain it well so I need to know how to answer the questions, not just answers.
1. Evaluate each function at the given value:
a.) if f(x)=11-7x, then find f(-3)
b.) if g(x,y)=3x+ sqrt of(2y+1), then find g(6,12)
c.) if h(x)=4^x + (x+1)/(x-1), then find h(3)

thatgirl21 · Answer

for a I got f(-3)=-10, b I got g(6,12)=23, and c I got h(3)=65 2/3. is this right?

loser66 · Answer

a,b ok
c, why 2/3?

zepdrix · Answer

Hmm a doesn't look quite right...$$\large\rm f(x)=11-7x$$$$\large\rm f(-3)=11-7(-3)$$That ends up being 11+21, yes?
Double negative.

Oh also,
$\large\rm \color{royalblue}{\text{Welcome to OpenStudy! :)}}$

loser66 · Answer

hehehe... zepdrix is soooo good.

thatgirl21 · Answer

for c i got h(3)=64+5/3 and i simplified. not sure if that's even right

thatgirl21 · Answer

oh I see what I did on a now. Forgot my negative sign and wrote it as a positive.

loser66 · Answer

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