What is the answer to 4x - 3.5

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?