If x=7 and y=3 what is the value of x+5y

i need help

Find the volume of the solid generated when the region bounded by y= x and y= 4√x is revolved about the x-axis the volume of the solid is: (type an exact answer cubic units)

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?