Please help I’ll mark you as brainliest if correct!

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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

What rotation was applied to triangle def to create d’e’f’?