The answer to this question is:
y = -2x - 1
She will use 13 there are four 1/4 per cup 4 times 3 plus 1 =13
To find the inverse of a function, firt we let

Now we switch x and y and solve for y .

Adding 25 to both sides

Now we need to get rid of square and for that we take square root on both sides. That is

Therefore, inverse is

Answer: 20.5 units
Step-by-step explanation:
P=Perimeter
JI=3-(-3)
JI=3+3
JI=6
IK=7-1
IK=6
JK=(6^2+6^2)^1/2 ==> Distance Formula
JK=(36+36)^1/2
JK=(2*36)^1/2
JK=6(2)^1/2
P=JI+IK+JK
P=6+6+6(2)^1/2
P=12+6(2)^1/2
P=20.485 units
P=20.5 units