Solve the problem.Use the formula N = Iekt, where N is the number of items in terms of the initial population I, at time t, and k is the growth constant equal to the percent of growth per unit of time. An artifact is discovered at a certain site. If it has 61% of the carbon-14 it originally contained, what is the approximate age of the artifact? (carbon-14 decays at the rate of 0.0125% annually.)
A. 4880 years
B. 1717 years
C. 3120 years
D. 3954 years
Answer: D
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Solve the problem.A rescue cable attached to a helicopter weighs 2 lb/ft. A 170-lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done in lifting the man if the helicopter is 30 ft above the water?
A. 1070 ft ? lb B. 6000 ft ? lb C. 5160 ft ? lb D. 6900 ft ? lb
Perform the operations indicated.1.0081 - 0.0704
A. 0.9377 B. 1.1877 C. -0.9377 D. 1.0785
Solve.My Popper, Inc., is planning a new popcorn popper. For the first year, the fixed cost of setting up the production line is $2700. The variable cost for producing each popper is $21. The revenue from each popper is $22. Find the profit or loss from the production and sale of 2300 poppers.
A. $5000 profit B. -$400 profit C. $6,159,421 loss D. $96,200 profit
Convert the units using unit fractions.220 sec = 
min
A. 2200
B. 13,200
C. 3
D. 3