The old rate of pay is x and the new rate is y then we have:
y = 2x + 7
Y = 21
PART 1: 21 = 2x+7
Subtract 7 from each side:
14 = 2x
Divide both sides by 2:
X = 14 / 2
X = 7
PART 2: The internship pays $7 per hour.
Answer:

The graph is also attached below.
Step-by-step explanation:
Given the function

- We know that the range of a function is the set of values of the dependent variable for which a function is defined.





Thus,

The graph is also attached below.
I think dialogue sorry if it is wrong