Question

Use the table below to answer question 9.

x -3 0 1 3
f(x) 12 0 0 6
g(x) 39 3 7 39
h(x) -14 1 -2 -20
2*f(3)-3*g(1)+h(3)=

Answer 1

-29

Explanation:

you need a graphing calculator.

so, let's start by setting up a table (for my sake because that text is confusing)

x f(x) g(x) h(x)

-3 12 39 -14

0 0 3 1

1 0 7 -2

3 6 39 -20

okay, that's out of the way. now, your equation is 2 * f(3) - 3 * g(1) + h(3).

for f(3), we look at the chart to see which f(x) value matches x=3.

f(3) = 6

same with g(1) and h(3)

g(1) = 7

h(3) = -20

now, replacing the functions(x) with their numbers is the next step.

2 * 6 - 3 *7 + (-20)

(2*6) - (3*7) - 20

(12) - (21) - 20 = -29