The formula for an exponential function is 
. Then the decay factor is:
?
A. 632
B. Y
C. t
D. 0.66
Answer: D
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Find a formula for the nth term of the sequence.-7, -6, -5, -4, -3 (integers beginning with -7)
A. an = n - 8 B. an = n - 6 C. an = n + 7 D. an = n - 7
Divide by using long division.
A. 252 R28 B. 252 C. 252 R66 D. 66
Write the decimal as a fraction or mixed number in lowest terms.-81.334
A. -81
B. - 
C. - 
D. -16
Solve the problem by writing and solving a suitable system of equations.A chemistry department wants to make 3 liters of a 17.5% basic solution by mixing a 20% solution with a 15% solution. How many liters of each type of basic solution should be used to produce the 17.5% solution?
A. 0.5 liter of 15% and 2.5 liters of 20% B. 1 liter of 15% and 2 liters of 20% C. 2 liters of 15% and 1 liter of 20% D. 1.5 liters of each