13
QuizMultiple Choice

Adding and Subtracting Matrices — Cumulative exam

Question 13 • NC-Math 4 CR

Juan jogs each day from his house to a local park, and then he jogs back along the same route. On his way to the park, he averages 4 miles per hour. On his way home, he averages 6 miles per hour. If the total trip takes hours, which equation can be used to find x, the distance in miles from Juan’s house to the park? Distance (mi)Rate (mi/hr)Time (hr)Trip to Parkx4 mph Trip to Homex6 mph

Question illustration
Answer
A
StartFraction x Over 4 EndFraction + StartFraction x Over 6 EndFraction = 1
Option A
B
StartFraction x Over 4 EndFraction + StartFraction x Over 6 EndFraction = 1 and one-half
Option B
C
4 x + 6 x = 1 and one-half
Option C
D
4 x + 6 x = 1
Option D
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