James' teacher asked him to rewrite the sum 60 + 90 as the product of the GCF of two numbers and a sum. James wrote 3(20 + 30). What mistake did James make? how should he have written the sum?

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2