Solve the problem.The cost for labor associated with fixing a washing machine is computed as follows: There is a fixed charge of $20 for the repairman to come to the house, to which a charge of $29 per hour is added. Find an equation that can be used to determine the labor cost, C(x), of a repair that takes x hours.
A. C(x) = ( 20 + 29) x
B. C(x) = 20 - 29x
C. C(x) = 29 + 20x
D. C(x) = 20 + 29x
Answer: D
Mathematics
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Find the indicated probability. Round your answer to 6 decimal places when necessary.Two fair 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice is greater than 10?
A. 
B. 3
C. 
D. 
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Write a mathematical expression for the word phrase.3 subtracted from 9, decreased by 12
A. (9 + 3) - 12 B. (3 - 9) - 12 C. 12 - (9 - 3) D. (9 - 3) - 12
Mathematics
Evaluate the composition of functions.Let f(x) = x2 + 3 and g(x) = 2x + 6. Find (g ? f)(7).
A. 58 B. 98 C. 403 D. 110
Mathematics
Determine whether the graph is the graph of a function.
A. Yes B. No
Mathematics