Multiply using the rule for the product of the sum and difference of two terms. Assume any variable exponents represent whole numbers.(5an + 4)(5an - 4)
A. 25an - 16
B. 25a2n + 40an - 16
C. 5a2n - 16
D. 25a2n - 16
Answer: D
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A child has 100 blocks that are 1-inch cubes. She arranges the blocks into a solid rectangle of length L and width W. The relationship between L and W is given by
.
A. Use a formula to express the perimeter P in terms of L and W.B. Use the relationship between L and W to express the perimeter in terms of L only.C. What values of and W give the smallest possible perimeter?
What will be an ideal response?
Solve the problem.Andrea's sleeping bag is designed for camping in temperatures of 25°C or warmer. Use the equation 
to determine for what Fahrenheit temperatures is her sleeping bag designed. Round to the nearest tenth of a degree.
A. 102.6° F or warmer B. 70.6° F or warmer C. 18.1° F or warmer D. 77.0° F or warmer
Perform the operation and reduce to lowest terms.1
÷ 1
A. 1
B. 
C. 1
D. 
Write the rational expression in lowest terms.
A. 
B. 
C. 
D. 