Determine whether the situation or equation represents direct or inverse variation.The cross-sectional area of a tree and its age
A. Inverse
B. Direct
Answer: B
Mathematics
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Find the Taylor series generated by f at x = a.f(x) = 
, a = 6
A. 
B. 
C. 
D. 
Mathematics
Evaluate the integral.
dx
A. (cos-1 x)7 + C
B. 
+ C
C. 
+ C
D. 6(sin-1 x)5 + C
Mathematics
Write the system of linear equations that the augmented matrix represents.
A.
| 5x | - 2y | = -2 |
| 6x | - 8y | = 8 |
B.
| -2x | + 5y | = -2 |
| 6x | - 8y | = 8 |
C.
| 5x | - 2y | = -2 |
| -8x | + 6y | = 8 |
D.
| 5x | - 2y | = 2 |
| 6x | - 8y | = -8 |
Mathematics
Solve the problem.A company knows that unit cost C and unit revenue R from the production and sale of x units are related by 
Find the rate of change of revenue per unit when the cost per unit is changing by 
and the revenue is $1000.
A. $720.35 B. $1128.00 C. $40.00 D. $312.70
Mathematics