Solve the problem.Use the formula N = Iekt, where N is the number of items at time t, I is the initial amount, and k is a growth constant equal to the percent of growth (expressed in decimal form) per unit of time.There are currently 70 million cars in a certain country, decreasing by 6.2% annually. How many years will it take for this country to have 63 million cars? Round to the nearest year.
A. 1 yr
B. 31 yr
C. 2 yr
D. 3 yr
Answer: C
Mathematics
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Find percent notation for the number in decimal notation.Sales this year were 1.1 times last year's sales.
A. 0.011% B. 1.1% C. 11% D. 110%
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Factor the trinomial or state that the trinomial is irreducible.x2 - x - 56
A. irreducible B. (x + 1)(x - 15) C. (x + 7)(x - 8) D. (x + 8)(x - 7)
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy
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Solve the equation.47 - 3x = 
A. {4}
B. {3}
C. 
D. {-3}
Mathematics