Please answer ASAP!! Thank you in advance, and remember to wash your hands consistently for 1 minute with antibacterial soap.

Which expression shows the sum of the polynomials with like terms grouped together

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42