Given the interest formula, I = r ? p ? t, solve the exercise for the unknown value. If necessary, round to the nearest cent, percent, or year.p = $1400, I = $168, t = 2 yr, r =
A. 8%
B. 7.5%
C. 6%
D. 4.5%
Answer: C
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Write the sentence as an inequality in two variables. Then graph the inequality.The y-variable is at most 2 less than the product of -5 and the x-variable.
A. y ? -5x - 2
B. y ? -5x - 2
C. y ? -5x + 2
D. y < -5x - 2
Factor the expression completely. If the polynomial is prime, state this as your answer.x4 - 81
A. (x2 + 9)(x + 3)(x - 3) B. (x2 - 9)(x2 - 9) C. (x2 + 9)(x2 + 9) D. prime
Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.6 logx x - logx y
A. logx x6 ÷ logb y
B. logx 
C. logx (x6 - y)
D. logx 
Use an equation to solve the percent problem.150% of 14 is what number?
A. 2.1 B. 21 C. 2100 D. 210