Find the equation in standard form of the parabola described.Vertex at (0, 0); Directrix the line x = 4
A. y2 = 16x
B. y2 = -16x
C. y2 = -4x
D. x2 = -16y
Answer: B
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Solve for the unknown quantity.
= 
A. t = 
B. t = 10
C. t = 5
D. t = 4
Add the numbers using the number line.-3 + 0 
A. 0 B. 3 C. -3 D. -30
Solve the problem.Zach is planning to invest up to $50,000 in corporate and municipal bonds. The least he will invest in corporate bonds is $9000 and he does not want to invest more than $27,000 in corporate bonds. He also does not want to invest more than $34,307 in municipal bonds. The interest is 8.2% on corporate bonds and 6.2% on municipal bonds. This is simple interest for one year. What is the maximum income?
A. $26,640 B. $30,640 C. $3640 D. $4788
Solve the problem.A store is discounting all regularly priced items by 75%. (i) Find a function f that computes the sale price of an item having a regular price of x. (ii) Find the regular price of an item that costs $84.59 on sale.
A. f(x) = x - 0.75; $85.34 B. f(x) = 0.75x; $112.79 C. f(x) = x - 0.75x; $338.36 D. f(x) = 0.75 + x; $83.84