Which of the following functions best describes this graph

Determine whether the graphs of y=8x+5 and -y=8x-5 are parallel, perpendicular, coincident, or none of these. a. coincident b. parallel c. perpendicular d. none of these

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'