For the quadratic function, tell whether the graph opens up or down and whether the graph is wider, narrower, or the same shape as the graph of 
f(x) = 
x2 - 5
A. Up; narrower
B. Down; wider
C. Up; wider
D. Down; narrower
Answer: C
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Write the equation in standard form. Then identify the vertex of the parabola.y = x2 - 9x - 1
A. y = 
2 - 1; 
B. y = 
2 - 
; 
C. y = 
2 - 
; 
D. y = 
2 - 
; 
Solve the problem. If necessary, refer to the table below.?Monthly Payments to Repay Principal and Interest on a $1000 Mortgage Term of Mortgage (Years)
In order to purchase a home, a family borrows $73,000 to be paid back over a 
period in equal monthly payments. What percentage of the first monthly payment goes toward the principal if the annual interest rate is 8%? If the annual interest rate is 10%?
A. 13.6%; 8.3% B. 14.1%; 5.9% C. 12.7%; 6.1% D. 86.4%; 91.7%
Find the extreme values of the function subject to the given constraint.
A. Maximum: none; minimum: 
at 
B. Maximum: none; minimum: 
at 
C. Maximum: none; minimum: 
at 
D. Maximum: none; minimum: 
at 
Solve the equation.3|x - 3| = 18
A. {3, -9} B. {9, -3} C. no solution D. {3}