Solve.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.40. The total cost to regrind 50 platens is $300. Find the linear cost function to regrind platens. If reground platens sell for $10.60 each, how many must be reground and sold to break even?
A. C(x) = 1.40x + 230; 20 platens
B. C(x) = 1.40x + 300; 33 platens
C. C(x) = 1.40x + 300; 25 platens
D. C(x) = 1.40x + 230; 25 platens
Answer: D
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Determine the x- and y-intercepts of the graph of the quadratic equation.y = 2x2 - 28x + 96
A. x-intercepts: 8, 6; y-intercept: 96 B. x-intercepts: 8, -6; y-intercept: -96 C. x-intercepts: -8, 6; y-intercept: -96 D. x-intercepts: -8, -6; y-intercept: 96
Solve the problem.Find f(
) if f(x) = 4x2 + 6x - 3.
A. 
B. - 
C. 
D. - 
Given log10 
and log10 
find the logarithm without using a calculator.log10 24
A. 0.5044 B. 1.3801 C. 1.7323 D. 0.4308
Solve.If the force acting on an object stays the same, then the acceleration of the object is inversely proportional to its mass. If a force acts on an object with a mass of 80 kilograms so that it accelerates at 
per second per second, then find the acceleration of an object with a mass of 
that is acted on by the same force.
A. 10 meters per second per second B. 80 meters per second per second C. 90 meters per second per second D. 81 meters per second per second