The given pattern continues. Write down the nth term of the sequence suggested by the pattern.0, 2, 6, 12, 20, ...
A. an = 2n - 2
B. an = n2 - n
C. an = 4n - 6
D. an = 2n-1 - 1
Answer: B
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Find the distance on the number line between the pair of numbers.-15, 4
A. 19 B. -11 C. 11 D. -19
Solve the problem by writing an appropriate system of equations and using the inverse of the coefficient matrix to solve the system.A grain dealer sold to one customer 5 bushels of wheat, 2 of corn, and 3 of rye, for $39.60; to another, 2 of wheat, 3 of corn, and 5 of rye, for $34.80; and to a third, 3 of wheat, 5 of corn, and 2 of rye, for $33.60. Which of the grains was the cheapest?
A. Wheat B. Wheat and rye (tie) C. Corn and rye (tie) D. Corn
Find the least common multiple for the set of numbers.120, 30
A. 360 B. 240 C. 120 D. 30
Subtract. Write the answer in lowest terms as a mixed number.
A. 9
B. 4
C. 5
D. 5