Lowes charges $1.80 fora 10­foot board, plus 5% for preparation cost. a. If you need 50 boards, how much would the preparation cost be for all 50? help please.

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

∆red ≅ ∆ by rule will give brainiest if possible

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.