The table shows the monthly revenue y (in thousands of dollars) of a landscaping business for each month of the year 2008, with x = 1 representing January.
?
x y 1 6.0 26.1 37.1 49.2 5 12.3 6 16.4 7 12.2 8 10.2 9 8.3 10 6.3 11 4.3 12 2.4 ?
A mathematical model that represents these data is:
?
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Find f (1) and f (12).
?
A. 
B. 
C. ?
D. 
E. 
Answer: C
Mathematics
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Solve the problem.The charge for renting a video is $2 plus $4 per day of renting. Give an expression for the cost C of renting a video for n days.
A. C = 2n + 4n B. C = 2n C. C = 4n D. C = 2 + 4n
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Solve.A projectile is thrown upward so that its distance, in feet, above the ground after t seconds is 
(i) Graph this equation.(ii) What is the maximum height that the projectile reaches?
What will be an ideal response?
Mathematics
Solve the equation.
= 
A. 
B. 
C. 
D. 
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Determine whether or not the function is one-to-one.
A. No B. Yes
Mathematics