Set up an equation that can be used to solve the problem. Solve the equation and answer the question asked. Janel Leith drives her moped for a number of hours at 30 miles per hour. When traffic slows, she drives at 20 miles per hour. She travels at 20 miles per hour for one-half hour longer than she traveled at 30 miles per hour. The difference in the distance traveled at 20 mph and 30 mph is 18 miles. Determine how long Janel traveled at 20 miles per hour.
A. 0.9 hr
B. 1.8 hr
C. 1.2 hr
D. 3.6 hr
Answer: B
You might also like to view...
Find at least three nonzero terms [including a0, at least two cosine terms (if they are not all zero) and at least two sine terms (if they are not all zero)] of the Fourier series for the given function.f(x) = 
A. f(x) = 7 - 
B. f(x) = -7 + 
C. f(x) = -7 - 
D. f(x) = -7 - 
Find an equation of the sphere that passes through the point (7,-4,9) and has center (-4,5,-5).
What will be an ideal response?
Graph the line containing the point P and having slope m.P = (-2, -1); m = 1 
A. 
B. 
C. 
D. 
Solve the problem.How long would it take to drive a distance of 29 miles if you drive at a constant speed of 40 miles per hour? Round your answer to the nearest hundredth if necessary.(Distance = Speed × Time)
A. 1.38 hours B. 0.73 hours C. 7.25 hours D. 1160.0 hours