Solve the equation. First simplify the expression by combining like terms.9x - (3x - 1) = 2
A. - 
B. - 
C. 
D. 
Answer: C
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Solve.A satellite is to be put into an elliptical orbit around a moon. The moon is a sphere with radius of 305 km. Determine an equation for the ellipse if the distance of the satellite from the surface of the moon varies from 545 km to 785 km.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Simplify.
- 
A. 
B. 
C. 
D. 
Solve the problem.Car A (travelling north at 30 mph) and car B (traveling west at 20 mph) are heading toward the same intersection. Car A is 6 miles from the intersection when car B is 8 miles from the intersection. Find parametric equations that describe the motion of cars A and B. 
A. Car A: x = 0, y = 30t - 6; Car B: x = 8 - 20t, y = 0 B. Car A: x = 0, y = 20t - 8; Car B: x = 30t - 6, y = 0 C. Car A: x = -30t + 6, y = 0; Car B: x = 8 - 20t, y = 0 D. Car A: x = 20t - 8, y = 0; Car B: x = 0, y = 6 - 30t
Factor the trinomial completely.20z2 - 7z - 6
A. (20z - 3)(z - 6) B. (4z - 3)(5z + 2) C. (4z + 3)(5z - 2) D. (20z - 3)(z + 2)