It’s showing you that’s it’s a squared number
for example, 5^2 = 5 squared = 25
X(domain) = 2
y (range)= -4
As an expression, this is 7n - 5
Where n is the number.
It would be 15 minutes.
10/40 is 1/4, and 1/4 of an hour would be 15 minutes.
There ya go :)