Multiply. Write the answer in simplest form.2
? 4
? 5
A. 40
B. 40
C. 
D. 11
Answer: C
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Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.10, 1 , -8, -17, . . .
A. an = 9n - 19; a20 = 161 B. an = -9n + 10; a20 = -170 C. an = -9n + 19; a20 = -161 D. an = 9n - 10; a20 = 170
Given that the x- and y-coordinates of a moving particle are given by the indicated parametric equations, find the magnitude and direction of the velocity for the specific value of t.x = 
, y = 9t2 + 1, t = 4
A. 72.00, 89.7° B. 72.00, 359.7° C. 9.01, 359.7° D. 9.01, 89.7°
Find the ordered pair for the vertex.g(x) = 0.1x2 - 1
A. (0, -1) B. (-1, 0) C. (-1.6, 0) D. (0, 1.6)
Solve the problem.The sales tax rate in one state is 6.75%. How much tax will be charged on a purchase of 8 chairs at $60 a piece? Round your answer to the nearest cent.
A. $324.00 B. $64.05 C. $4.05 D. $32.40