Which of the following lines is perpendicular to y=1/4x-3? •
A. y = 4x
B. 4x - y = -2
C. y = -4x + 6
D. 8x - 2y = 3
E. y = 4x + 9
•
(I think it’s either C, or D, please help I don’t understand)

Multiply −2x(6x^4−7x^2+x−5) express the answer in standard form. enter your answer in the box.

Adriana sold 50 shares of a company’s stock through a broker. the price per share on that day was $22.98. the broker charged her a 0.75% commission. what was adriana’s real return after deducting the broker’s commission? a. $8.62 b. $229.80 c. $1,140.38 d. $1,149.00

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.