Solve the problem.On her way to a holiday weekend, Nancy drove 2
hours in rush-hour traffic. When traffic eased up, she was able to increase her speed by 42 miles per hour and drove another 4
hours. If the entire trip was 343 miles, how fast did she drive in rush-hour traffic?
A. 24 mph
B. 23
mph
C. 22 mph
D. 23 mph
Answer: C
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Provide an appropriate response.Find a polynomial that represents the perimeter.
A. r3 + 4r2 + 10r + 9 B. r3 + 3r2 + 11r + 9 C. 4r3 + 11r + 9 D. 4r3 + r2 + 10r + 9
Write the following in scientific notation.120
A. 1.2 × 101 B. 1.2 × 102 C. 1.2 × 103 D. 1.2 × 10-2
Solve.A square piece of cardboard is to be formed into an open-topped box by cutting 
squares from the corners and folding up the sides. The volume of the resulting box is given by the formula 
where x is the original length of each side of the piece of cardboard. Rewrite this volume equation by factoring completely.
A. (x - 8)2 B. 4(x - 8)(x + 8) C. 4(x + 8)2 D. 4(x - 8)2
Use the definition or identities to find the exact value of the indicated trigonometric function of the acute angle ?.tan ? = 
Find cos ?.
A. 
B. 
C. 
D. 