Multiply.(x - 10)(-2x + 3)
A. -2x2 - 30x + 23
B. -2x2 + 23x - 30
C. -2x2 + 21x - 30
D. -2x2 + 23x + 23
Answer: B
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Add. 15
+ 
A. 15
B. 14
C. 13
D. 14
Add the fractions. Write the answer in lowest terms.
A. 
B. 
C. 
D. 
Solve the problem.Given that the polar equation r = a(1 - e2)/(1 + e cos ?) models the orbits of the planets, compare Earth's orbit relative to the sun with that of Pluto and describe the difference. For Earth, 
and 
For Pluto, 
and 
A. Pluto's orbit closely approximates a circle with the sun positioned at its center. Earth's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center. B. The orbits of Earth and Pluto are both circular, with the sun positioned at their centers, but the diameter of Pluto's orbit is about 40 times that of Earth. C. Earth circles the sun, but Pluto does not. D. Earth's orbit closely approximates a circle with the sun positioned at its center. Pluto's orbit is more elliptical with the sun positioned on its long axis about 10 astronomical units away from the center.
Solve the problem.The difference between the tuition at State University and Highbrow College is less than $900. The tuition at Highbrow is $5000. Express this as an absolute value inequality. Use "x" for the tuition of State University.
A. 
< 900
B. x > 5000 - 
C. x < 
D. 
< 5000