Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5?

1.commutative property of addition
2.distributive property
3.additive identity
4.additive inverse

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

What is the y intercept of f(x)=(1/2)^x?

Me find the value of x each figure.