Solve the problem.The base of a rectangular tank measures 6 ft by 12 ft. The tank is 19 ft tall, and its top is 10 ft below ground level. The tank is full of water weighing 62.4 lb/ft3. How much work does it take to empty the tank by pumping the water to ground level? Give your answer to the nearest ft ? lb.
A. 810,950 ft ? lb
B. 3,286,483 ft ? lb
C. 1,664,582 ft ? lb
D. 811,140 ft ? lb
Answer: C
Mathematics
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Solve the equation.log7(4x + 3) = log7(4x + 7)
A. ?
B. {2}
C. 
D. {0}
Mathematics
Use the graph to determine the domain and range of the function. 
A. domain: {x|x ? -3, x ? 3} range: all real numbers B. domain: {x|x ? -3, x ? 3} range: {y|y ? 0} C. domain: all real numbers range: {y|y ? -3, y ? 3} D. domain: all real numbers range: all real numbers
Mathematics
Determine the slope and y-intercept of the function.F(x) = - 
x
A. m = 
; b = 0
B. m = -4; b = 0
C. m = - 
; b = 0
D. m = 0; b = - 
Mathematics
Simplify the expression.-8 + 9
A. -17 B. 1 C. -1 D. 17
Mathematics