Simplify the expression. Assume that all variables are positive when they appear.
A. 5
B. 
C. 5
D. 
Answer: D
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Simplify. Write your answers in the form of a+bi, where a and b are real numbers.2i(4 - 5i)
A. - 8i - 10i2 B. 8i - 10 C. 10 + 8i D. 8i + 10i2
Find the limit.
(5 sin x - 1)
A. 0 B. 5 C. -1 D. 5 - 1
Create the required linear function an use it to answer the question.In 1995 the United States recovered 22% of its municipal wastes through recycling, up from 17% in 1990. Let P represent the percentage recycled and t the number of years since 1990. Based on these two data points, create a linear equation for the function that describes how P varies as a function of time. Use this function to predict the percentage recycled in 2003.
A. 30% B. 28.1% C. 26.4% D. 31.7%
Factor completely. If the polynomial cannot be factored, say it is prime.x2 - 5x - 36
A. (x + 4)(x - 9) B. prime C. (x - 4)(x - 9) D. (x - 4)(x + 1)