Use the formulas relating distance, rate, and time.A family began a trip of 375 miles at 8 A.M. They arrived at their final destination at 4:30 P.M. If they took three 20-minute breaks and took a half hour for lunch, what was their average rate? Round to the nearest tenth if necessary.
A. 57.7 mph
B. 68.2 mph
C. 53.6 mph
D. 62.5 mph
Answer: C
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Solve the problem.Use the formula M = log (I/I0), where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. If an earthquake measured 4.3 on the Richter scale, what was the intensity of the earthquake? Round to the nearest whole number.
A. 19,953 B. 74 C. 15,849 D. 1995
Use an integer or rational number to express the number representing change.In one state, the lowest point is 4019 feet below sea level.
A. 4019 B. -4019
On the coordinate plane below, plot the points with the given coordinates.A(0, -5), B (-3, 0)
A. 
B. 
C. 
D. 
Match the graph to one of the polar equations.
A. r = -4 sin ? B. r = -4 cos ? C. r = -2 D. r sin ? = -2