Ask question

Ask question

All categories

3 years ago

6

What is the value of f(−1) when f(x)=2x+2 ? Enter your answer in the box. f(−1)=

2 answers:

lutik1710 [3]3 years ago

5 0

F(-1)=2(-1)+2
f(-1)=-2+2
f(-1)=0

Sergio039 [100]3 years ago

5 0

F(-1)=0 hope this helps just took the test on this!

You might be interested in

What is the value of X if 9^x^-^1-2=25?

nadezda [96]

Answer:

$\frac{5}{2}$

Step-by-step explanation:

First, add two to both sides to get $9^{x-1}=27$

There are two ways to solve this from here

Think about what power you would have to raise 9 to to get to 27. $9^{\frac{1}{2}}$ = 3 and $3^3=27$ . So, multiplying the powers (because it is a power to a power) you get $9^{\frac{3}{2}}=27$ . This means that $x - 1 = \frac{3}{2}$ or x = $\frac{5}{2}$ .
Take the log of both sides.

This gives us $\log_9(27)=x-1\\\log_9(27)+1=x\\\log_9(3^3)+1=x\\3\log_9(3)+1=x\\3(\frac{1}{2})+1=x\\\frac{3}{2}+1 = x\\\\\frac{5}{2} = x$

4 0

3 years ago

I need help againnnn, the 2nd and 3rd pics are supposed to be together

Trava [24]

Answer:

umm what do you mean can like you explain

4 0

3 years ago

Read 2 more answers

A train left for Miami, and 6 hours later, a car traveling 79 mph tried catching up to the train. After 7 hours, the car caught

nikdorinn [45]

Answer: 121 mph

Step-by-step explanation: First, I did 6 x 7, and I got 42. Then I did 42 + 79, and I got 121 mph as my answer.

5 0

3 years ago

30 points.Help pleasee with answer.Dont know how this works

alex41 [277]

Answer:

3

Step-by-step explanation:

23=5x-4

Add 4 to both sides

27=9x

Divide 9 To both sides

27/9 9x/9

x=3

4 0

3 years ago

Read 2 more answers

List all the factors of the number 30

denpristay [2]

Answer:

1, 2, 3, 5, 6, 10, 15, 30 there you go

Step-by-step explanation:

4 0

3 years ago