Estimate the interval(s) on which the function is increasing and decreasing.f(x) = x3 + 3x2
A. increasing on (-2.00, 0); decreasing on (-?, -2.00) and (0, ?)
B. increasing on (-?, -2.00) and (-2.00, 0); decreasing on (0, ?)
C. increasing on (-2.00, ?); decreasing on (-?, -2.00)
D.
| increasing on (-?, -2.00) and (0, ?); decreasing on (-2.00, 0) |
Answer: D
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Give a rule for the piecewise-defined function. Then give the domain and range.
A. f(x) = 
; Domain: (-?, ?), Range: {-3, 3}
B. f(x) = 
; Domain: {-3, 3}, Range: (-?, ?)
C. f(x) = 
; Domain: (-?, ?), Range: {-3, 3}
D. f(x) = 
; Domain: {-3, 3}, Range: (-?, ?)
Graph the function.f(x) = 4x
A. 
B. 
C. 
D. 
Use a proportion to solve the problem.On Anne's bicycle, the ratio of pedal turns to rear-wheel turns in second gear is 4 to 7. If her rear wheel turns 784 times per mile, how many times does she turn the pedal in one mile?
A. 791 times B. 1372 times C. 448 times D. 788 times
Use synthetic division to find the function value.f(x) = 3x4 - 7x3 + 3x2 - 3x + 5; find f(2)
A. 3 B. 15 C. 93 D. -42