Solve the formula for the specified variable.r = 
for ?
A. ? = 
2
B. ? = 
C. ? = 
D. ? = 
Answer: C
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Given the graph of f, find any values of x at which f ' is not defined.
A. x = 2 B. x = -2, 0, 2 C. x = -2, 2 D. x = 0
Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Find the unknown value.$423 interest is paid when $4700 is borrowed at 3% simple interest. Find the time for the loan.
A. 2 years B. 5 years C. 4 years D. 3 years
Find the equation that the given graph represents and give the domain, range, and interval(s) over which the function is increasing and decreasing.
A. P(x) = -x4 + x2 - 3x - 4; domain: (-?, ?); range: (-?, ?); Increasing over [-.34, .76]; Decreasing over (-?, -.34] and [.76, ?) B. P(x) = 2x3 + x2 - 3x + 4; domain: (-?, ?); range: (-?, ?); Increasing over (-?, -.86] and [.57, ?); Decreasing over [-.86, .57] C. P(x) = 2x4 - x2 + 4; domain: (-?, ?); range: (-?, ?); Increasing over (-?, .57]; Decreasing over (-?, .57] and [.86, ?) D. P(x) = -x3 - x - 4; domain: (-?, ?); range: (-?, ?); Increasing over (-?, -.34] and [.76, ?); Decreasing over [-.34, .76]