Use the Half-angle Formulas to find the exact value of the trigonometric function. cos 75°
A. - 
B. - 
C. 
D. 
Answer: D
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The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.s = 5t2 + 3t + 6, 0 ? t ? 2Find the body's displacement and average velocity for the given time interval.
A. 26 m, 26 m/sec B. 26 m, 13 m/sec C. 38 m, 19 m/sec D. 16 m, 23 m/sec
Use the Rational Zero Theorem to list all possible rational zeros for the given function.f(x) = 7x3 - x2 + 5
A. ± 
, ± 
, ± 1, ± 5, ± 7
B. ± 
, ± 
, ± 1, ± 5
C. ± 
, ± 
, ± 1, ± 7
D. ± 
, ± 
, ± 1, ± 5, ± 7
Use synthetic division to determine whether x - c is a factor of the given polynomial.4x3 - 33x2 + 14x + 147; x - 7
A. Yes B. No
Solve the application.Leo farms 340 acres of land. One year, he planted soybeans on 
of his land. How many acres did he plant with soybeans?
A. 38 acres B. 42 acres C. 40 acres D. 20 acres