Rewrite the expression by using grouping symbols. y • 4 + y • z
a.4(y + z) b. y • (4 + y) • z c. z(y • 4) d. y (4 + z)

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