If y varies directly as x, find a linear function which relates them.y = 0.6 when x = 1.2
A. f(x) = x - 0.6
B. f(x) = 0.6x
C. f(x) = 2x
D. f(x) = 0.5x
Answer: D
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Evaluate the series, if it converges.8 + 2 + 
+ 
+ . . .
A. 
B. 
C. 
D. Does not converge
Solve the problem.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.50. The total cost to regrind 60 platens is $300. Find the linear cost function to regrind platens. If reground platens sell for $8.60 each, how many must be reground and sold to break even?
A. C(x) = 1.50x + 210; 30 platens B. C(x) = 1.50x + 300; 30 platens C. C(x) = 1.50x + 210; 21 platens D. C(x) = 1.50x + 300; 43 platens
Factor.x2 + 
x + 
A. 
B. 
2
C. 
D. 
2
Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation 
where x is the time in months, with 
corresponding to January, 
and 
Determine the month with the greatest total sales and give the sales in that month.
A. March; $12,700 B. June; $8500 C. December; $12,700 D. September; $4300