Evaluate.82 ÷ 8 × 8 + 7
A. 71
B. 8
C. 448
D. 57
Answer: A
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Find the difference.-10.7 - 13.8
A. -3.1 B. 24.5 C. -24.5 D. 3.1
Determine whether the statement is true or false.A trapezoid is also a quadrilateral.
A. True B. False
Solve the system mentally, without the use of a calculator or pencil-and-paper calculation. Try to visualize the graphs of both lines.x + 0y = 90x + y = 4
A. x = 9; y = 4
B. x = 4; y = 9
C. x = 9; y = 2
D. x = 2; y = 
Write the relationship as a formula.The volume V of a rectangle is calculated by multiplying the length l times the width w times the height h. For a cube, all sides s are the same dimension, so this relationship can be simplified and written in exponential form. Write the simplified form.
A. V = s3 B. V = (lwh)2 C. V = s2 D. V = l2 + w2 + h2