Divide the expression. You may want to use the property 
= 
+ 
. Do not use a calculator.
A. 3x8 - 9x4
B. 3x8 + 45x7
C. -6x15
D. -15x11 - 9x4
Answer: A
Mathematics
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Find the domain and range of the quadratic function whose graph is described.The maximum is -5 at x = -1
A. Domain: (-?, ?) Range: (-?, -5] B. Domain: (-?, ?) Range: (-?, -1] C. Domain: (-?, ?) Range: [-5, ?) D. Domain: (-?, -1] Range: (-?, -5]
Mathematics
Find an equation of the parabola described.Directrix the line y = 3; vertex at (0, 0)
A. x = - 
y2
B. x = 3y2
C. y = - 
x2
D. y = -12x2
Mathematics
Solve.William earned an extra $9000 last year from a part-time job. He invested part of the money at 8% and the rest at 10%. He made a total of $800 in interest. How much was invested at 10%?
A. $4000 B. $4500 C. $7000 D. $5000
Mathematics
Simplify. Leave your answer in exponent form.(x9y)2
A. x18y2 B. x11y3 C. x18y D. x11y
Mathematics