Solve.The function A = A0e-0.0077x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 900 pounds of the material are placed in the vault, how much time will need to pass for only 525 pounds to remain?
A. 75 yr
B. 140 yr
C. 70 yr
D. 80 yr
Answer: C
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Express the rational number as a decimal.
A. 0.1 B. 0.8 C. 1.2 D. 0.6
David's company has to ship 2,200 boxes of sprinklers. 4 truckloads all containing the same number of boxes were delivered. How many boxes were shipped in each truck?
A. 50 boxes B. 55 boxes C. 555 boxes D. 550 boxes
A firm that offers credit with terms of 2/10 net 30 gives its customers a:
A. 2 percent discount from the full invoice price if the bill is paid on or before Day 30; otherwise an additional cost of 10 percent of invoice price must be paid. B. 20 percent discount from the full invoice price if the bill is paid on or before Day 10; otherwise the entire bill is due by Day 30. C. 30 percent discount from the full invoice price if the bill is paid on or before Day 10; otherwise the entire bill is due by Day 2 of the month following the sale. D. 10 percent discount from the full invoice price if the bill is paid on or before Day 2; otherwise the entire bill is due by Day 30. E. 2 percent discount from the full invoice price if the bill is paid on or before Day 10; otherwise the entire bill is due by Day 30.
State whether the function is a polynomial function or not. If it is, give its degree. If it is not, tell why not.f(x) = x4/3 - x3 - 6
A. Yes; degree 4/3 B. Yes; degree 4 C. No; x is raised to non-integer 4/3 power D. Yes; degree 3