Ab contains the points a(7, -11) and b(8,17). find the slope of a line perpendicular to ab
a. undefined
b.-1/28
c.1/28
d.28

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Write the percent as a fraction or mixed number in simplest form. 0.8%