Solve for the specified variable. Assume that all other variables are nonzero.(b + 11)y2 + 5y + 8z = 0; for y
A. y = 
B. y = 
C. y = 
D. y = 
Answer: B
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Solve the problem.During a storm in Anchorage, Alaska, the temperature was 10°F at noon. Then it dropped 5°F each hour for the next 2 hours, followed by an additional drop of 7°F the third hour. What was the temperature at 3 P.M.?
A. -5°F B. 7°F C. -7°F D. -8°F
Find the slope-intercept form of the equation of the line with the given properties.x-intercept = 7; y-intercept = 3
A. y = - 
x + 7
B. y = - 
x + 3
C. y = 
x + 3
D. y = - 
x + 7
Solve the problem.Economists use what is called a Leffer curve to predict the government revenue for tax rates from 0% to 100%. Economists agree that the end points of the curve generate 0 revenue, but disagree on the tax rate that produces the maximum revenue. Suppose an economist produces this rational function 
where R is revenue in millions at a tax rate of x percent. Use a graphing calculator to graph the function. What tax rate produces the maximum revenue? What is the maximum revenue?
A. 36.6%; $268 million B. 34.0%; $271 million C. 41.2%; $264 million D. 35.8%; $276 million
Multiply. Simplify by combining like terms.(x + 14y)2
A. x2 + 28x + 196y2 B. x4 + 196y2 C. x2 + 28xy + 196y2 D. 196x2 + 28xy + 196y2