Solve the equation.
= 
A. {4}
B. {0}
C. 
D. ?
Answer: D
Mathematics
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Solve.Doreen and Irena plan to leave their houses at the same time, roller blade towards each other, and meet for lunch after 2 hours on the road. Doreen can maintain a speed of 7 miles per hour, which is 70% of Irena's speed. If they meet exactly as planned, what is the distance between their houses?
A. 14 miles B. 34 miles C. 20 miles D. 23.8 miles
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Find the value for the function.Find -f(x) when f(x) = -3x2 + 4x + 3.
A. -3x2 - 4x + 3 B. -3x2 - 4x - 3 C. 3x2 - 4x + 3 D. 3x2 - 4x - 3
Mathematics
Write the percent problems as equations or proportions and solve. Round to the nearest tenth or tenth of percent. 56 is what percent of 85 ?
A) 64.9% B) 66.9% C) 67.9% D) 63.9% E) 65.9%
Mathematics
Find the integral. 
Mathematics