The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 8 sin t - cos tFind the body's velocity at time t = ?/4 sec.
A. 
m/sec
B. - 
m/sec
C. 
m/sec
D. - 
m/sec
Answer: A
Mathematics
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Graph the linear inequality.-3x - 4y ? -12
A. 
B. 
C. 
D. 
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?Find the approximate change in z when the point 
changes from 
to 
.
?
; from 
to 
??
__________
Fill in the blank(s) with the appropriate word(s).
Mathematics
Translate to an equation. Do not solve.What is 25% of 80?
A. n = 80% × 25 B. 25 = n × 80% C. n × 25% = 80 D. n = 25% × 80
Mathematics
Solve and check.-26 + r = 0
A. r = 1 B. r = 26 C. r = 0 D. r = -26
Mathematics