Graph the polar equation.r = 2 - 2 cos ? 
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.A geometric progression is a sequence of terms in which each term is r times the preceding term. The sum of the first two terms of such a sequence, where a is the first term, is given by the expression 
. Simplify the expression.
A. a(1 + r) B. a + r C. a(1 - r) D. a(1 + r2)
Find the standard form of the equation for the ellipse satisfying the given conditions. Center (0, 0); vertices (0, ±8); c = 4
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the problem.A marina owner wishes to estimate a linear function that relates boat length in feet and its draft (depth of boat below water line) in feet. He collects the following data. Let boat length represent the independent variable and draft represent the dependent variable. Use a graphing utility to draw a scatter diagram and to find the line of best fit. What is the draft for a boat 60 feet in length (to the nearest tenth)? 
A. 10.5 ft B. 10.3 ft C. 9.6 ft D. 15.7 ft
Use factoring to find the zeros of the quadratic function. List the x-intercepts of the graph of the function.g(x) = 16x2 - 1
A. x = 
B. x = 
, x = 0
C. x = 
, x = - 
D. x = - 