Simplify. −5x^4(−3x^2+4x−2) a) −15x8−20x5+10x4 b) 15x8−20x4+10 c) −8x6−x5−7x4 d) 15x6−20x5+10x4

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Which of the following is the result of expanding the series

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.