Use back-substitution to solve the system of linear equations.
a. 
b. 
c. 
d. 
a.
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Solve the problem.Find the foci and asymptotes of the following hyperbola:x2 - 
= 1
A. Foci: (4, 0), (-4, 0); Asymptotes: y = 
x, y = - 
x
B. Foci: (
, 0), (-
, 0); Asymptotes: y = 
x, y = - 
x
C. Foci: (
, 0), (-
, 0); Asymptotes: y = 4x, y = -4x
D. Foci: (0, 
), (0, -
); Asymptotes: y = 4x, y = -4x
Solve the problem using the rule of 78s.Caroline Jones took out a 48-month fixed installment loan of $21,000 to open a restaurant. She began making monthly payments of $533.75. Caroline's business does better than expected and instead of making her 27th payment, Caroline decides to repay her loan in full. What is the total amount due to pay off the balance?
A. $11,022.34 B. $10,301.25 C. $10,835.00 D. $10,348.64
Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(-5x - 11)(-3x + 3)
A. 15x2 + 18x + 18 B. -8x2 + 18x + 18 C. 15x2 + 18x - 33 D. -8x2 + 18x - 33
Use the Distributive Property to remove the parentheses.8(x + 9)
A. 72x B. x + 72 C. 8x + 9 D. 8x + 72