4(-2)^2(-1)^3
4 x 4 x -1
Correction answer D: -16
Lisa has 21 books because you add 1 to Felix because she Lisa had 1 more than him & Joe has 10 than Lisa .
I’m pretty sure the answer is “axis of symmetry”, hope this helped! :)
Answer:
1) x = 15
Step-by-step explanation:
We use the Pythagorean thm for these questions. Where a and b are the legs (So order doesn't matter), and where c is the hypotenuse
1)
a² + b² = c²
9² + 12² = x²
81 + 144 = x²
x² = 225
You square root each side so you can get rid of the exponent on x.

x = 15