Find the domain and range.{(-7,5), (11,-1), (-8,7), (-8,-5)}
A. domain = {5, 7, -1, -5}; range = {-7, -8, 11}
B. domain = {-7, -8, 11, 8}; range = {5, 7, -1, -5}
C. domain = {-7, -8, 11, -18}; range = {5, 7, -1, -5}
D. domain = {-7, -8, 11}; range = {5, 7, -1, -5}
Answer: D
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Solve the problems.Students enrolled in a prealgebra class can withdraw within the first two weeks without receiving a grade. If there were 32 students registered for class on the first day and 27 remaining at the end of the second week, what was the percent decrease in students for the first two weeks? Round to the nearest tenth of a percent, if necessary.
A. 84.4% B. 15.6% C. 81.5% D. 18.5%
Use the fundamental identities to simplify the expression.1 - cos2 ?
A. sin ? B. - sin2 ? C. tan2 ? D. sin2 ?
Perform the indicated operation.
+ 
A. 
B. 
C. 
D. 0
Find the vector x determined by the given coordinate vector [x]B and the given basis B.B = 
, [x]B = 
A. 
B. 
C. 
D. 