Solve the equation.-81 - 7x = -18 + 2x
A. {-9}
B. {7}
C. {9}
D. {-7}
Answer: D
Mathematics
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Solve the problem.Regrind, Inc. regrinds used typewriter platens. The cost per platen is $2.60. The fixed cost to run the grinding machine is $122 per day. If the company sells the reground platens for $4.60, how many must be reground daily to break even?
A. 40 platens B. 16 platens C. 61 platens D. 46 platens
Mathematics
Write the function shown in the graph as a transformation of r(x) = 
.
A. y = 
B. y = 
- 4
C. y = 
D. y = 
- 4
Mathematics
Evaluate the equation. 
What will be an ideal response?
Mathematics
Find the indicated trigonometric function, where ? is the radian measure of the given angle. Give an exact answer with a rational denominator.Find sin ?.
A. 
B. 
C. 
D. 
Mathematics