The figure shows the velocity v or position s of a body moving along a coordinate line as a function of time t . Use the figure to answer the question. s (m)
When is the body moving forward?
A. 0 < t < 1, 3 < t < 4, 5 < t < 7
B. 0 < t < 3, 3 < t < 5, 5 < t < 8
C. 0 < t < 8
D. 0 < t < 1, 3 < t < 4, 5 < t < 7, 9 < t < 10
Answer: D
Mathematics
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Use the substitution formula to evaluate the integral.
A. - 
B. 
C. 
D. - 
Mathematics
Factor the polynomial f(x). Then solve the equation f(x) = 0.f(x) = x3 + 2x2 - 15x - 36
A. (x + 3)(x + 3)(x - 6) ; -3, -3, 6 B. (x + 3)(x + 3)(x - 4) ; 3, 3, -4 C. (x + 3)(x + 3)(x - 4) ; -3, -3, 4 D. (x - 3)(x - 3)(x + 4) ; -3, -3, 4
Mathematics
Find the partial fraction decomposition for the rational expression.
A. 
- 
B. 
+ 
C. 
+ 
D. 
- 
Mathematics
Solve.A tank is in the shape of a cylinder 4 feet tall and 8 feet in radius. Find the exact surface area of the tank.
A. 96? sq ft B. 192? sq ft C. 24? sq ft D. 256? sq ft
Mathematics