Write the slope-intercept equation (y = mx + b) for a line with the given characteristics.m = - 4, y-intercept (0, -7)
A. y = - 7x - 4
B. 4x + y = - 7
C. y = - 4x - 7
D. y = - 4x
Answer: C
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Solve the problem.A manufacturer determines that the daily cost C, in dollars, to produce x units of a product is modeled by the function C(x) = 0.1x2 - 26x + 1590. How many units can the manufacturer produce each day in order to keep the daily cost below $390?
A. More than 60 but fewer than 200 units B. Fewer than 200 units C. Fewer than 60 or more than 200 units D. More than 60 units
Solve the equation.6r2 = 2r
A. {0, 3}
B. 
C. {0}
D. 
Write an inequality of the form 
or of the form 
so that the inequality has the given solution set.[-3, 9]
A. 
? -3
B. 
? 9
C. 
? 6
D. 
? 6
State whether the slope of the line is positive, negative, zero, or undefined.
A. undefined B. negative C. zero D. positive