The cost of manufacturing x units is C dollars, where C = 4x + 6
+ 5. Weekly production at t weeks from the present is estimated to be x = 2800 + 100t units when t = 8. Find the time rate of change of cost, 
. Enter just an integer.
Fill in the blank(s) with the appropriate word(s).
405
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Solve the triangle.
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A small dog will weigh 22 pounds at adulthood. The following table shows the weight W, in pounds, t months after birth. The difference 
between his maximum weight and his current weight is given in the third row of the table.
t 3 5 7 9 11 W 7.48 12.99 16.12 17.15 18.37
14.52 9.01 5.88 4.85 3.63?
A: Use exponential regression to model the difference 
as a function of t. Round your answer to two decimal places.B: Use the model you found in part A to find a formula that gives the approximate weight W at age t months. Round your answer to two decimal places.C: Plot the graph of W versus t along with the data points for weight.D: At what age does the dog weigh 21.16 pounds? Round your answer to two decimal places.
What will be an ideal response?
Write the whole number in expanded form.50,300
A. 50,000 + 3000 B. 50,000 + 300 C. 5000 + 300 D. 5,300,000
Find the component form of the indicated vector.Let u = 
. Find -7u.
A. 
B. 
C. 
D. 