Answer the question.A retailer finds that total costs per day are given by c = 121
+ 25, where c is cost and n is units sold. What is c when no units are sold?
A. $55
B. $605
C. $146
D. $25
Answer: D
Mathematics
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Simplify the polynomial by combining like terms.
x2 + 
x + 
+ 
x2 - 
x - 
A. 
x2 - 
x - 
B. 
x4 + 
x2 - 
C. 
x2 + 
x - 
D. 
x6 - 
Mathematics
Solve the problem.A certain exotic sports car costs three hundred twelve thousand, nine hundred ninety-five dollars. Write as a number.
A. 3,209,950 B. 312,995,000 C. 312,995 D. 31,295
Mathematics
Determine whether the vectors v and w are parallel.v = 
, w = 
A. Parallel B. Not parallel
Mathematics
Solve.Two plumbers make house calls. One charges $80 for a visit plus $45 per hour of work. The other charges $65 per visit plus $55 per hour of work. For how many hours of work do the two plumbers charge the same?
A. 1 hr B. 1.5 hr C. 2 hr D. 0.5 hr
Mathematics