Simplify the expression.-4y2 + 10y2
A. -6y2
B. -6y4
C. 6y4
D. 6y2
Answer: D
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Find the area of the region specified in polar coordinates.the smaller loop of the curve r = 5 + 10 sin ?
A. 
(2? + 3
)
B. 
(2? + 3
)
C. 
(2? - 3
)
D. 
(2? - 3
)
Write expanded notation.5070
A. 5 ten thousands + 7 thousands + 0 hundreds + 0 tens + 0 ones B. 507 thousands C. 5 thousands + 0 hundreds + 7 tens + 0 ones D. 5 hundreds + 0 tens + 7 ones
Solve the problem.The table below ranks the eight best professors at State College measured by the percentage of students who gave them a rating of "excellent" on a survey. Let x represent the percentage of students who gave a professor an "excellent" rating. Write the name or names of the professors described by the inequality 75.4% ? x < 85.3%.
A. Murphy, O'Brien, Davis, and Isley B. Wu, Levan, Kallman, Diaz, and Murphy C. O'Brien, Davis, and Isley D. Diaz, Murphy, O'Brien, Davis, and Isley
Find the reciprocal.
A. 
B. 
C. 
D. 