Graph the function. Show at least one period.y = -3 cos(x - ?)
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Write a fractional rate. Simplify the rate to a unit rate and write it as a phrase.While walking, Joe's heart beats 2577 times in 30 minutes. What is the unit rate in beats per minute?
A. 
; 79.9 beats per minute
B. 
; 0.012 beats per minute
C. 
; 89.3 beats per minute
D. 
; 85.9 beats per minute
Mathematics
Combine the complex numbers.3i + (-5 - i)
A. -5 + 4i B. -5 + 2i C. 5 - 2i D. 5 - 4i
Mathematics
Multiply.(x + 12)(x3 + 9x - 5)
A. x4 + 12x3 + 9x2 + 113x + 60 B. x4 + 9x2 - 5x + 12 C. x4 + 12x3 + 9x2 + 103x - 60 D. x3 + 21x2 + 103x - 60
Mathematics
Evaluate the expression for the given replacement values. Write the answer in simplest form.x + y for x = - 
, y = - 
A. - 
B. - 
C. 
D. - 
Mathematics