Simplify the expression by using a sum or difference identity.sin 
cos 
+ cos 
sin 
A. 
B. 1
C. 
D. 
Answer: C
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Write a logistic equation with the given parameter values. Then solve the initial value problem and graph the solution. Let r be the natural growth rate, K the carrying capacity, and P0 the initial population.r = 0.2, K = 1,750, P0 = 70
A. P' = -0.2P
; P = 
B. P' = 0.2P
; P = 
C. P' = 0.2P
; P = 
D. P' = 0.2P
; P = - 
Provide an appropriate response.Starting at middle C with a frequency of 260 cps, find the frequency of the note a an octave and a fourth above middle C.
A. 676 B. 716 C. 689 D. 694
Expand the quotient by partial fractions.
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Use the double-declining-balance method of depreciation. Round to the nearest dollar.Metal Fabricators buys a milling machine for $3,500 and estimates its useful life at 4 years and its salvage value at $350. What is the amount of depreciation each year?
A. $875, $875, $875, $875 B. $788, $788, $788, $788 C. $1,575, $788, $788, $438 D. $1,750, $875, $438, $88