Solve and check.
- 
= 0
A. 
B. 
C. 
D. 
Answer: A
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Eva invested a certain amount of money at 13% interest and $2,500 more than that amount at 15%. Her total yearly interest was $1,775. How much did she invest at each rate?
A. $2,500 at 13%, $5,000 at 15% B. $5,000 at 13%, $7,500 at 15% C. $5,200 at 13%, $7,300 at 15% D. $5,200 at 13%, $7,700 at 15% E. $7,500 at 13%, $5,000 at 15%
Answer the following statement(s) true (T) or false (F)
Cognition deals primarily with psychological constructs like attitudes and emotions.
Use the derivative of 
to determine any points on the graph of 
at which the tangent line is horizontal.
A. 
B. 
and 
C. 
and 
D. (0,0)
E. f(x) has no points with a horizontal tangent line.
Give the amplitude or period as requested.Period of y = -2 cos 
x
A. 6?
B. 
C. -2
D. 