9
Answer: ASet 3: Linear Inequalities (Advanced)
Explanation
PROBLEM
A car must travel at least 300 miles. At 50 mph, minimum hours?
A car must travel at least 300 miles. At 50 mph, minimum hours?
A.✓ Correct
6
B.
7
C.
5
D.
8
Detailed Explanation
Choice A is the best answer. 50t >= 300. t >= 6
Why others are wrong:
B: 7 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.