Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 63 million cars in a certain country, increasing by 5.1% annually. How many years will it take for this country to have 86 million cars? Round to the nearest year.
A. 5 years
B. 3 years
C. 61 years
D. 6 years
Answer: D
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Solve the problem.Nikki is fishing from a bank 17 feet above water level. In this location, the fish tend to feed at 28 feet below the surface. How long must Nikki's fish line be to reach the fish?
A. -11 ft B. 45 ft C. 11 ft D. -17 ft
Use the double-declining-balance method of depreciation. Round to the nearest dollar.Metal Fabricators buys a milling machine for $3800 and estimates its useful life at 4 years and its salvage value at $380. What is the amount of depreciation each year?
A. $1710, $855, $855, $475 B. $1900, $950, $475, $95 C. $855, $855, $855, $855 D. $950, $950, $950, $950
Solve.Megan went shopping for holiday presents for her family. She spent $193 on Monday, $219 on Tuesday, and $378 on Wednesday. What is the total amount of money that she spent on gifts?
A. $780 B. $690 C. $790 D. $880
Solve.Find the volume of a rectangular block of wood 7 inches by 1
inches by 3
inches.
A. 5
cu in.
B. 12
cu in.
C. 7 cu in.
D. 38
cu in.