Solve for x 8 is to 64 as 2 is to x

Which is f(5) for the function –2x2 + 2x - 3?

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.

What are two numbers that have a sum of 15