Find the vertex, the focus, and the directrix of the parabola.x2 - 10x + 8y + 1 = 0
A. V: (- 5, 3); F: (5, 1); D: y = 5
B. V: 
; F: (5, -5); D: y = -11
C. V: 
; F: (5, 5); D: y = 1
D. V: 
; F: (5, 1), D: y = 
Answer: A
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Write an algebraic equation and use it to solve the problem.Don James wants to invest $58,000 to earn $6950 per year. He can invest in 
bonds paying 
per year or in a Certificate of Deposit (CD) paying 
per year. How much money should be invested in each to realize exactly $6950 in interest per year?
A. $33,000 in B-rated bonds and $25,000 in a CD B. $24,000 in B-rated bonds and $34,000 in a CD C. $25,000 in B-rated bonds and $33,000 in a CD D. $34,000 in B-rated bonds and $24,000 in a CD
Solve the problem.
The Montgomerys borrowed $88,000 at 7
% for 30 years to purchase a house. Find the monthly payment and the sum of the principal and interest charges.
A. $645.92, $232,531.20 B. $585.20, $210,672.00 C. $650.32, $234,115.20 D. $616.00, $221,760.00
Solve the problem.The perimeter of a rectangle is 22 cm. One side is 5 cm longer than the other side. Find the lengths of the sides.
A. 3 cm, 8 cm B. 6 cm, 11 cm C. 3 cm, 5 cm D. 4 cm, 9 cm
Find the real solutions of the equation.x3/4 - 3x1/4 = 0
A. {
}
B. {2}
C. {0, 9}
D. {0, 81}