Determine whether the statements are equivalent.If the wind speed is over 70 miles per hour, then the tree will be uprooted.If the tree is not uprooted, then the wind speed is not over 70 miles per hour.
A. Not equivalent
B. Equivalent
Answer: B
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Solve the problem.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 20 mph C. 50 mph D. 40 mph
Simplify.
A. 1
B. 
C. 0
D. -1
Use ZERO (or ROOT) to approximate the positive x-intercepts of the equation. Round to two decimal places.y = x4 + 1.5x3 - 8.31x2 - 3.27x + 8.39
A. 0.94 and 2.18 B. 8.39 C. 1.19 and 3.44 D. 0.87 and 2.21
Solve the problem.Alla doesn't trust banks, so her savings are hidden under her mattress. Betsy has her savings in an investment at simple interest. In approximately what year did they have the same amount?
A. 1988 B. 1996 C. 1986 D. 1989