Question

i don't understand this problem.

If the rule of the function is "multiply by 2 then add 3" and the input value is -2, what is the output value?
A) -8
B) -4
Eliminate
C) -1
D) 0

Answer 1

dont worry about the eliminate

Answer 2

The input is -2, what should be done first with this number?

Answer 3

take your input (which is -2)
tehn follow the rule so

first multiply -2 *2

than add 3 to the resulting number

the number you get then is you 'output' i.e. the answer

Answer 4

f(x)=2x+3

for x=-2 what will get ?

f(-2)=2(-2)+3 = ?