Question

Help please, can't seem to figure this out.

Answer 1

FIRST QUESTION
The range is equal to the value of y or the value of f(x). 
f(x) = (1/4)ˣ
the value of f(x) will always be positive. Because any positive numbers (1/4) is squared by any numbers (x) will produce f(x) a positive number too. Therefore f(x) > 0, in other word y > 0
ANSWER: FIRST OPTION


SECOND QUESTION
Find the value of b by substitutiong the value of x and the value of f(x)
f(x) = bˣ
9 = b¹
9 = b
The value of b is 9, therefore the function will be f(x) = 9ˣ

Find the value of f(x) when x = 7
f(x) = 9ˣ
f(x) = 9⁷
f(x) = 4,782,969
ANSWER: FIRST OPTION


THIRD QUESTION
The domain of the function is equal to the value of x. The value of x could be any real numbers
ANSWER: THIRD OPTION

Answer 2

 ${ y|y \ \textgreater \ 0 }$

Your answer is $y\ \textgreater \ 0$