Solve the problem.A college charges $219 per unit for tuition. If we let u represent the number of units that a student is taking, build a variable expression for the student's tuition.
A. 219 ÷ u
B. 219 + u
C. u ÷ 219
D. 219u
Answer: D
Mathematics
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Factor the polynomial completely.18x3 - 84x2y + 98xy2
A. 2x(3x - 7y)2 B. 2x(3x - 7y)(3x + 7y) C. 2x(3x + 7y)2 D. prime
Mathematics
Evaluate the expression.71
A. 7
B. 1
C. -7
D. 
Mathematics
Plot the point in a polar coordinate system.
A. 
B. 
C. 
D. 
Mathematics
Solve.An open-top rectangular box has a square base and it will hold 256 cubic centimeters (cc). Each side of the base has length x cm. The box's surface area S is given byS(x) = 
+ x2.
Estimate the minimum surface area and the value of x that will yield it.
A. 192 cm2 when x = 8 cm B. 256 cm2 when x = 6 cm C. 256 cm2 when x = 8 cm D. 207 cm2 when x = 6 cm
Mathematics