She should leave $30. Hope it helps! If you could vote me brainiest, that would be awesome!

so.. to get every angle, simply plug in 10 for "x" for each.
48 all you had to do was out it in a calculator that's what I did
Answer:
f(7)=10-14=-4
Answer=-4
Step-by-step explanation:
Equation: f(x)=(1/5)x^2 or f(x)=(0.2)x^2
Check:
f(0)=(1/5)(0)^2
f(0)=(1/5)(0)
f(0)=0✓
f(5)=(1/5)(5)^2
f(5)=(1/5)(25)
f(5)=5✓