Whats 1-2x+3y for x=-2 and y=-5 ?​

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

Determine the area of a triangle with (see picture below)