Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. 
B. -4
C. 2
D. - 
Answer: A
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Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 29,400,000,000,000 B. 600,000 C. 29,400,000 D. 600,000,000,000
Solve the problem.A store takes inventory of a popular clock at the end of each business day. The table below shows the number of clocks in stock during a 5-day period in which no new clocks were received from the distributor. What are the domain and range of the function described by the table? 
A. Domain = {1, 2, 3, 4, 5}; range = {7, 11, 12, 16, 23} B. Domain = [1, 5]; range = [7, 23] C. Domain = [7, 23]; range = [1, 5] D. Domain = {7, 11, 12, 16, 23}; range = {1, 2, 3, 4, 5}
Simplify the expression.-5(10r + 4) + 7(3r + 8)
A. -70r B. 5r - 1 C. -29r + 4 D. -29r + 36
Evaluate for the given values.y - x + z; x = 7.5, y = 9, z = 0.81
A. 2.41 B. 0.69 C. -0.69 D. 2.31