(6a3 + 7a2 - 20a) ö (3a2 - 4a) =
a. 2a2 - 4
b. 2a2 - 10
c. a2 + 10
d. 2a - 2
e. 2a + 5
e. 2a + 5
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Use the bar graph to answer the question.The bar graph illustrates the numbers of certain grades earned in Mathematics 100. How many grades of D were earned?
A. 3 B. 10 C. 5 D. 8
Solve.In 1996, an outbreak of a disease infected 18 people in a large community. By 1997, the number of those infected had grown to 32. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 18e0.575t, where t is the number of years after 1996. B. N(t) = 18e0.575t, where t is the number of years after 1997. C. N(t) = 18e5.75t, where t is the number of years after 1997. D. N(t) = 18e5.75t, where t is the number of years after 1996.
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.85 as soon as you get in the taxi, to which a charge of $1.95 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride, and use this equation to find the cost of a 9-mile taxi ride.
A. $21.30 B. $20.40 C. $20.58 D. $20.28
Find the area of the polygon.
A. 665 m2 B. 16.5 m2 C. 6.65 m2 D. 66.5 m2