Evaluate the integral.
A. 21?
B. 11?
C. 10?
D. 20?
Answer: D
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Solve the differential equation.x
= 
- 6y, x > 0
A. y = x-6(cos x + c), x > 0 B. y = x6(sin x + c), x > 0 C. y = x6(cos x + c), x > 0 D. y = x-6(sin x + c), x > 0
Graph y = f(x). Write the domain of f in interval notation.f(x) = (x + 4)1/4
A. [0, ?)
B. [-4, ?)
C. [4, ?)
D. [0, ?)
Solve the system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.
A. x = 1, y = -3, z = -16; (1, -3, -16)
B. x = 2, y = 3, z = -7; (2, 3, -7)
C. x = 1, y = 3, z = -4; (1, 3, -4)
D. x = 5, y = 
, z = -3; 
Approximate the area under the graph of f(x) over the specified interval by dividing the interval into the indicated number of subintervals and using the left endpoint of each subinterval.f(x) = 0.02x3 + 11; interval [-8, 0]; 4 subintervals
A. 38.24 B. 76.48 C. 56.00 D. 28.00