Use the given graph of the quadratic function f to write its formula as 
.
A. f(x) = -(x - 3)2 + 1
B. f(x) = (x + 3)2 + 1
C. f(x) = -(x + 3)2 - 1
D. f(x) = -(x + 3)2 + 1
Answer: D
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Graph the polar equation.r2 = 15 sin 4?
A. 
B. 
C. 
D. 
Translate into an equation and solve.The quotient of a number and -0.022 is -0.21.
A. 0.00462 B. -0.462 C. 0.000462 D. -0.0000462
Find the domain of the function.h(x) = 
A. {x|x ? 4} B. all real numbers C. {x|x ? -8, 0, 8} D. {x|x ? 0}
Solve the problem.Linda invests $25,000 for one year. Part is invested at 5%, another part at 6%, and the rest at 8%. The total income from all 3 investments is $1600. The total income from the 5% and 6% investments is equal to the income from the 8% investment. Find the amount invested at each rate.
A. $10,000 at 5%, $10,000 at 6%, $5000 at 8% B. $8000 at 5%, $10,000 at 6%, $7000 at 8% C. $5000 at 5%, $10,000 at 6%, $10,000 at 8% D. $10,000 at 5%, $5000 at 6%, $10,000 at 8%