2 years ago

Find f(-7) if f(x) = 2х+ 8.

Mathematics

2 answers:

elena55 [62]2 years ago

8 0

Answer:

Step-by-step explanation:

Put x = -7 to f(x) = 2x + 8:

f(-7) = 2(-7) + 8 = -14 + 8 = -6

Artyom0805 [142]2 years ago

6 0

use the substitution method

f(x)= 2x+8

f(-7)= 2(-7)+8

Mutiply first then add

Positive number times negative number = negative number

= -14+8

f(-7)= -6

Answer : f(-7)= -6

You might be interested in

Niko used square tiles to make a rectangle with 2 rows and 7 tiles in each row. Explain how you can find the area of the rectang

Vsevolod [243]

Multiply the length 7 tiles by the width of 2 tiles to get the area of 14 tiles

8 0

3 years ago

Hey guys <br><br>what is 10+12-34+68-4778855+5676+77-6865666+3456-7658×45×23+35566÷79997 = ?

elena55 [62]

Answer:

-19561285.5554

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Mike deposited $6500 into two saving accounts bearing simple interest. One of the accounts has an interest rate of 3% while the

ololo11 [35]

0.03x+0.06 (6500-x)=225
Solve for x
0.03x+390-0.06x=225
0.03x-0.06x=225-390
-0.03x=-165
X=165÷0.03
X=5500 invested at 3%

6500-5500=1000 invested at 6%

7 0

3 years ago

ANSWER QUICK PICTURE ATTACHED

Sonbull [250]

Answer:

Step-by-step explanation:

x+5+x+7x-5=180 degree (being the interior angles of a triangle)

9x=180

x=180/9

x=20 degree

3 0

2 years ago

Read 2 more answers

Under her cell phone plan, Aubrey pays a flat cost of $57.50 per month and $4 per gigabyte . She wants to keep her bill at $75.1

docker41 [41]

Answer:

57.50+4x=75.10

x=4.4

So she can use up to 4.4 gigabytes of data

4 0

3 years ago