It's the bottom one. 20 dollars has to be less than or equal to the amount. you cannot spend more than $20
Answer:
No
Step-by-step explanation:
When you plug in (2,-2) into the equation, the solution does not equal 4. So the point (2,-2) does not lie on the line.
Answer:
Yes, the student is correct
Step-by-step explanation:
Given

Required
Does it represent the x intercept
At the x intercept, the value of x is 0.
So, the function
becomes 
can be compared to 
Hence, the student is correct