Question

If f(x) = 0.8(2 – x), what is the value of f(–2)?

A.
0

B.
1.6

C.
3.2

D.
3.6

Answer 1

@calculusxy

Answer 2

@SolomonZelman

Answer 3

@helppls123

Answer 4

Insert the functional value of -2 where where x belongs, then evaluate the expression.

Answer 5

with functions, you take the number that is in the ( ), so we have f(-2), and take the fomula
f(x) = 0.8(2 – x)
and everywhere you see an 'x' replace it with the -2

f(–2)=0.8(2 – (-2))

Answer 6

anyone?

Answer 7

uhhh

Answer 8

We will have to work with the expression of 0.8(2-(-2)
When you want to evaluate these types of expressions, you want to use the Order of Operations: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

First we have to evaluate the parentheses. What is 2-(-2)

Answer 9

4

Answer 10

ok now i got 0.8 (4)

Answer 11

idk what els to do

Answer 12

Correct.
Now we have the remains of 0.8(4). If a number is within the parenthesis, then it means that we have to multiply the number inside with the number that is outside. What is 0.8*4

Answer 13

3.2

Answer 14

So your answer is 3.2.

Answer 15

C