Jamal buys 33 bolts that cost $0.38 each Which equation represents the best estimate for the total cost of all of the bolts? A. $0.30 × 30 = $9 B. $0.40 × 30 = $12 C. $0.50 × 30 = $15 D. $0.40 × 40 = $16

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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