Solve the problem.An electrician charges a fee of $40 plus $25 per hour. Express the cost of the electrician's services as a function of the amount of time he spends on the job.
A. C(x) = 40x - 25
B. C(x) = 40x + 25
C. C(x) = 25x + 40
D. C(x) = 25x - 40
Answer: C
Mathematics
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A. x = 
B. x = 
C. x = 
D. x = 
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Determine whether the scatter diagram indicates that a linear relation may exist between the two variables. If a linear relation does exist, indicate whether the slope is positive or negative.
A. Nonlinear B. Linear with negative slope C. Linear with positive slope
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
A. -3
B. -3y
C. -6y
D. -3y3
Mathematics