Solve the problem.It costs $42 per hour plus a flat fee of $33 for a plumber to make a house call. What is an equation of the form y = ax + b for this situation?
A. y = 42x
B. y = 33x
C. y = 42x + 33
D. y = 33x + 42
Answer: C
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Provide an appropriate response.Change 0.6 to its fraction or mixed-number equivalent and reduce to lowest terms.
A. 
B. 
C. 
D. 
Find numbers a and b, or k, so that f is continuous at every point.
A. k = 42 B. k = 30 C. k = -6 D. Impossible
Write the expression as the sum or difference of single logarithms. log9
A. 
log9x + 
log9y - 2log9z
B. 
log9x + 
log9y - 
log9z
C. 
log9x ? 
log9y ÷ 2log9z
D. 5log9x + 2log9y - 2log9z
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.35 as soon as you get in the taxi, to which a charge of $1.70 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride, and use this equation to find the cost of a 4-mile taxi ride.
A. $9.33 B. $10.05 C. $9.03 D. $9.15