In how many ways can a seven-question true-false exam be answered? (Assume that no questions are omitted.)
a. 138
b. 128
c. 133
d. 118
b. 128
Mathematics
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The rectangular coordinates of a point are given. Find polar coordinates for the point.(0.6, -1.1) Round the polar coordinates to two decimal places, with ? in degrees.
A. (1.25, -57.93°) B. (1.25, -61.39°) C. (1.25, 61.39°) D. (1.25, 57.93°)
Mathematics
Find the indicated sum or difference, if it is defined.
+ 
A. 
B. 
C. 
D. not defined
Mathematics
Factor.-30x2 - 25x + 30
A. 5(3x + 2)(-2x + 3) B. (-15x + 10)(2x + 3) C. 5(-3x + 2)(2x + 3) D. (-3x + 2)(10x + 15)
Mathematics
Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
Mathematics