Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent nonzero real numbers.z3(z-2)
A. 
B. 
C. z6
D. z
Answer: D
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The orbit of Hale-Bopp comet, discovered in 1995, is an ellipse with eccentricity 0.995 and one focus at the Sun. The length of its major axis is 366.5 AU. [An astronomical unit (AU) is the mean distance between Earth and the Sun, about 93 million miles.] Find the maximum distance from the comet to the Sun. (The perihelion distance from a planet to the Sun is a(1 - e) and the aphelion distance is a(1 + e).) Find the answer in AU and round to the nearest hundredth.
What will be an ideal response?
Solve the problem.Standing 16 feet from a streetlight, a 7-foot-tall tree casts a 4-foot shadow. How tall is the streetlight?
A. 35 ft B. 42 ft C. 28 ft D. 21 ft
Find the vertex, focus, and directrix of the parabola with the given equation.(y - 1)2 = 20(x + 3)
A. vertex: (-3, 1) focus: (-8, 1) directrix: x = 2 B. vertex: (3, -1) focus: (8, -1) directrix: x = -2 C. vertex: (-3, 1) focus: (2, 1) directrix: x = -8 D. vertex: (1, -3) focus: (6, -3) directrix: x = -4
Graph the system of inequalities. Shade the region that represents the solution set.y? 
x + y> -1
A. 
B. 
C. 
D. 