Ask
your own question, for FREE!

Mathematics

eviant:

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f*g)(-5)

5 months ago
eviant:

@mhchen

5 months ago
mhchen:

I think (f*g)(-5) = f(-5)*g(-5). so first find f(-5)

5 months ago
eviant:

10x+35

5 months ago
mhchen:

uh well f(-5) = -2(-5) - 7 = 10 - 7 = 3

5 months ago
mhchen:

I'm not sure how you got 10x + 35, Did you see what I did? Try to find g(-5) now,

5 months ago
eviant:

-4(-5)+6 20+6 26?

5 months ago
mhchen:

Yup so all you have to do now is multiply f(-5) and g(-5) together 3 * 26

5 months ago
eviant:

78?

5 months ago
mhchen:

ye

5 months ago
eviant:

3 –6 26 –59

5 months ago
mhchen:

oh are those the options?

5 months ago
eviant:

^^those are the choices

5 months ago
mhchen:

HMMMmmmmm

5 months ago
mhchen:

okay I'm gonna assume (f*g)(x) is (fog)(x) or f(g(x)) a composite function

5 months ago
mhchen:

basically first you find g(-5) which you already did. It was 26 Then you plug 26 into f(x)

5 months ago
mhchen:

Can you find f(26)?

5 months ago
eviant:

@mhchen -2(26)-7=-59?

5 months ago
mhchen:

yep

5 months ago
Can't find your answer?
Make a FREE account and ask your own question, OR you can help others and earn volunteer hours!

Latest Questions

gviviana:
Jackie wants to take a trip around the world. She plans to deposit $150 at the beginning of each month into an investment with a 4.

2 hours ago
0 Replies
0 Medals

susu:
A plumber is fitting pipes for a remodeled kitchen sink. The sink requires 3 different sections of pipe; the first is 2003-04-03-00-00_files/i0150000.

3 hours ago
0 Replies
0 Medals

Vocaloid:
having some trouble understanding how adding methanol increases the rate of hydrolysis on cellulose.

4 hours ago
1 Reply
0 Medals

iosangel:
how many minutes does it take water to reach 40u00b0 c on a stove?

4 hours ago
3 Replies
1 Medal

abungie32:
Each square on the grid represents 1 km2. What is the approximate area of this co

6 hours ago
2 Replies
1 Medal

mhchen:
What's wrong with this proof: Suppose a = b. Then: a^2 = ab | Multiply by a (a^2)

6 hours ago
1 Reply
3 Medals

thtsjaz:
In the graph below, find the coordinate of the image point. O is the origin and P is the point (4, 3).

6 hours ago
1 Reply
0 Medals

Vocaloid:
calculate the polarity index of a solution that is 55% 50 mM ammonium dihydrogen

11 hours ago
2 Replies
0 Medals

RichardWatterson7:
IF U COULD HAVE ANY POWER FROM ANY ANIME WHAT ANIME WOULD IT BE FROM!!!!!

6 hours ago
41 Replies
6 Medals

Kabbed:
http://prntscr.com/n1m76e What is the function of the structure indicated by the

10 hours ago
8 Replies
2 Medals

shasha12:
Choose the sentence in which the underlined word is correct. A) The heightened emotion in the film effected me.

11 hours ago
2 Replies
0 Medals

lilmama12:
What is the missing statement for step 7? (5 points) mu2220 SQV + mu2220 VQT = 18

11 hours ago
1 Reply
0 Medals

dumbkid102:
What is the equation of the line that has a slope of 4 and a y-intercept of -7? y

10 hours ago
2 Replies
0 Medals

goaway:
At 5:00 p.m., Antonio turned on the oven. While the oven preheated, the temperature in the oven increased from 72u00b0F to 400u00b0F over a 10-minute period

12 hours ago
6 Replies
0 Medals