Perform the indicated operation. Write the answer in simplest form. If the answer is an improper fraction, write it as a mixed number.1
? 7
A. 8
B. 49
C. 7
D. 11
Answer: D
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Solve the system of equations using the elimination method.
A. (-2, -6) B. (-3, -5) C. All ordered pairs along x - 2y = 10 D. No solution
Use the information given in the table to solve the problem.The table gives the Consumer Price Index for selected years.
Use the concept of an average or mean to estimate the CPI in 1965.
A. 50.2 B. 54.9 C. 51.8 D. 52.5
Solve the problem.At a local grocery store the demand for ground beef is approximately 50 pounds per week when the price per pound is $4, but is only 40 pounds per week when the price rises to $5.50 per pound. Assuming a linear relationship between the demand x and the price per pound p, express the price as a function of demand. Use this model to predict the demand if the price rises to $5.80 per pound.
A. p = 0.15x + 11.5; 38 pounds B. p = 11.5x + -0.15; 40 pounds C. p = - 0.15x + 11.5; 38 pounds D. p = - 0.15x - 11.5; 40 pounds
Use the horizontal line test to determine if the function is one-to-one.
A. Yes B. No