Given the equation of a line 4x - 5y = 15, which of the following equations would not be a line perpendicular to the
given line

a) y= -5/-2x-3
b) 5x+4y=12
c) y=4/5x+5
d) 10x+8y=-6

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

The measure of an angle is 117°. what is the measure of a supplementary angle?