26. Of the families in Mel's apartment building, 55% have at least one pet. There are 80 families in Mel's apartment building. How many have at least one pet?

Precalculus question, image attached.

Which statements about the system are true? check all that apply. y =1/3 x – 4 3y – x = –7 the system has one solution. the system consists of parallel lines. both lines have the same slope. both lines have the same y–intercept. the equations represent the same line. the lines intersect.

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)