Write the English phrase as an algebraic expression. Let the variable x represent the number.nine decreased by a number
A. 
B. 9 - x
C. x - 9
D. x + 9
Answer: B
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Find the slope-intercept form of the equation for the line shown.
A. y = - x + 3 B. y = - x - 3 C. y = x - 3 D. y = x + 3
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 4)2 = 12(x + 1)
A. vertex: (-1, -4) focus: (-4, -4) directrix: x = 2 B. vertex: (-4, -1) focus: (-1, -1) directrix: x = -7 C. vertex: (1, 4) focus: (4, 4) directrix: x = -2 D. vertex: (-1, -4) focus: (2, -4) directrix: x = -4
Solve.The monthly payment p on a mortgage varies directly with the amount borrowed b. Suppose that you decide to borrow $120,000 using a 30-year mortgage. You are told that your monthly payment is $675.80. Assume that you have decided to buy a more expensive home that requires you to borrow $250,000. What will your monthly payment be?
A. $324.38 B. $1535.91 C. $1407.92 D. $1689.50
When two resistors of resistances 
and 
are connected in parallel (see figure), the total resistance
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?
.
Find 
for a parallel circuit in which 
ohms and R must be at least 1 ohm.
?
A. 
B. 
C. 
D. 
E. 
