Solve the problem.Stevie bought a stereo for $290 and put it on sale at his store at a 55% markup rate. What was the retail price of the stereo? Round to the nearest cent if necessary.
A. $390.00
B. $580.00
C. $449.50
D. $349.50
Answer: C
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Find all real solutions of the equation.  figure 1.png)
(a) x = 0, x = 20 (b) x = 5, x = 20 (c) x = 0, x = -25 (d) x = 20, x = 80 (e) none of these
Solve the problem.Wildlife management personnel use predator-prey equations to model the populations of certain predators and their prey in the wild. Suppose the population M of a predator after t months is given by M = 750 + 125 sin 
twhile the population N of its primary prey is given by N = 12,250 + 3050 cos 
tFind the period for each of these functions.
Fill in the blank(s) with the appropriate word(s).
Write an algebraic expression, using x as the variable.476 plus a number
A. x + 476 B. x - 476 C. 476x D. 476
Write the interval as an inequality involving x, and illustrate the inequality using the real number line.[-2, ?)
A. x ? -2
B. x ? -2
C. x > -2
D. x > -2