Provide an appropriate response.The price of a cubic yard of concrete increased last year from $65 to $78. What was the percent of increase to the nearest percent?
A. 120%
B. 83%
C. 17%
D. 20%
Answer: D
Mathematics
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Solve.A boat can go 90 mph in still water. It takes as long to go 280 miles upstream as it does to go downstream 320 miles. How fast is the current?
A. 4 mph B. 5 mph C. 1 mph D. 6 mph
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Factor the perfect square trinomial completely.49a2 + 98ab + 49b2
A. 49(a + b)2 B. (7a - 7b)2 C. 49(a - b)2 D. (7a + 7b)2
Mathematics
Describe and graph the interval of real numbers.(4, ?)
What will be an ideal response?
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Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Mathematics