Solve.A small business owner made $40,000 the first year he owned his store and made an additional 
over the previous year in each subsequent year. Find how much he made during his fourth year of business. Find his total earnings during the first four years. (Round to the nearest cent, if necessary.)
A. $20.48; $43,476.48
B. $50,388.48; $180,244.48
C. $233,280.00; $474,880.00
D. $419,904.00; $894,784.00
Answer: B
Mathematics
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Sketch the surface z = f(x,y).f(x, y) = 4x2 + 4y2 + 2
A. 
B. 
C. 
D. 
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Translate into an equation. Do not solve the equation.What number times four equals sixty?
A. x = 4 ? 60 B. 4x = 60 C. 4 + x = 60 D. 4 = 60x
Mathematics
Divide, if possible. If not possible, write "not defined."
A. 0 B. Not defined C. 1 D. 61
Mathematics
Solve the problem.Express as a unit price. A contractor charges $74.98 for 2 hours of work. What is the cost per hour?
A. $37.49 B. $39.49 C. $2.00 D. $74.98
Mathematics