Solve. Remember to insert units when writing your answer.An oil drum holds 50 gal of oil. If 9 gal and 1 qt have been removed, how much oil remains?
A. 40 gal 7 qt
B. 41 gal 3 qt
C. 40 gal 3 qt
D. 41 gal 1 qt
Answer: C
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If a rock is thrown downward with an initial velocity of 8 feet per second, then its velocity 
, in feet per second, after 
seconds is given by
?
?
By how much does velocity increase over a 4-second period?
A. 32.16 feet per second
B. 128.09 feet per second
C. 32.00 feet per second
D. 128.00 feet per second
Let x represent one number and let y represent the other number. Use the given conditions to write a system of equations. Solve the system and find the numbers.Two numbers total 16, and their difference is 20. Find the two numbers.
A. 18 and - 2 B. 8 and - 12 C. 16 and 2 D. 9 and 7
Solve and graph the solutions.|x - 11| < 10
A. 
B. 
C. 
D. 
Solve the problem.Determine whether the ordered triple (-2, 6, -1) is a solution of the system of equations.-x + 3y + 4z = 163x + 2y - z = 74x - y + 3z = -17
A. No B. Yes