Express the solution set of the inequality in interval notation.x ? -8
A. (-8, ?)
B. (-?, -8)
C. [-8, ?)
D. (-?, -8]
Answer: D
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Solve the problem.Suppose that y is inversely proportional to x and that y = 20.5 when x = 5. Find the constant of proportionality k. Then, find y when x = 25.
A. k = 4.1; y = 102.5 B. k = 102.5; y = 4.1 C. k = 115; y = 4.6 D. k = 100.5; y = 4.1
Find the equation of the line passing through the indicated two points in standard form.(8, 0) and (0, -9)
A. y = - 
x - 9
B. y = - 
x + 8
C. 9x - 8y = 72
D. 9x + 8y = 72
Use the Binomial Theorem to find the indicated coefficient or term.The 4th term in the expansion of (x + 3y)10
A. 3240x7y3 B. 3240x3y7 C. 1080x7y4 D. 1080x3y7
Solve.The speed of a ball dropped from a tower is given by the linear function f(t) = 32t where f(t) is in feet per second and t is the number of seconds since the ball was dropped. Find the speed of the ball after 9 seconds.
A. 32 feet per second B. 278 feet per second C. 9 feet per second D. 288 feet per second