Solve for the variable.x + 
= 12
A. 23
B. 
C. 
D. 
Answer: B
Mathematics
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Solve.The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 
per hour?
A. 154.05 ft B. 141.75 ft C. 121.5 ft D. 142.09 ft
Mathematics
Divide.
A. 5x - 1 B. - 5x + 5 C. 5x + 5 D. 5x - 5
Mathematics
Write the word phrase in symbols, using x as the variable.The sum of a number and 71
A. 71 - x B. 71x C. x + 71 D. 71
Mathematics
Replace the ? with the inequality symbol < or >.-30 ? -60
A. -30 > -60 B. -30 < -60
Mathematics