Perform the operation. Write the answer as a fraction in lowest terms.
+ 
A. 
B. 1
C. 
D. 3
Answer: B
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Solve the problem.What is the difference in the weights of a kitten weighing 800 g and a dog weighing 15 kg? Express your answer in kg.
A. 14.92 kg B. 7 kg C. 14.2 kg D. 785 g
Set up a linear equation and solve it. Use the variable x in your equation.Bob is saving to buy a car. The total amount that he needs is $14,000. The amount that he has saved so far is $5000. How much more does Bob need?
A. 5000 + x = 14,000; $9002 B. 5000 - x = 14,000; $9002 C. 5000 - x = 14,000; $9000 D. 5000 + x = 14,000; $9000
Find the indicated probability.The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement 
Suppose one of these people is selected at random. Compute the probability that the person either 
A. 0.253 B. 0.064 C. 0.423 D. 0.487
Solve the problem.Jeremy was ordered to perform 630 hours of community service by picking up litter along the highway. Jeremy spends 7 hours each day picking up litter. The equation that tells the number of hours (y) that remain on the sentence after x days is y = 630 - 7x. Find the y-intercept of this equation, and explain what it signifies.
A. (630, 0) The original sentence is 630 hours. B. (0, 90) The original sentence is 90 hours. C. (90, 0) After 90 days, there are no more required hours. D. (0, 630) The original sentence is 630 hours.