Verify that the matrix is invertible and find its inverse.A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 = 
Answer: A
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Solve the problem.Suppose that a household appliance draws a current represented by the relation src="https://sciemce.com/media/4/ppg__jhjhj0506192304__f1q61g5.jpg" alt="" style="vertical-align: -4.0px;" /> where a, k, and d are constants.
where t is time measured in seconds. The power consumed by the appliance is 
where R is a constant. Take R to be 16 and graph the power in 
by 
and use an identity to write the expression for the power in the form
A. P = 392 cos(120?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]
B. P = 392 cos(240?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]
C. P = 784 cos(240?t) + 784
[0, 0.04, 0.01] by [-200, 2000, 200]
D. P = -392 cos(240?t) + 392
[0, 0.04, 0.01] by [-200, 2000, 200]
Solve the problem.A certain area of forest is populated by two species of animals, which scientists refer to as A and B for simplicity. The forest supplies two kinds of food, referred to as F1 and F2. For one year, species A requires 1.3 units of F1 and 1.25 units of F2. Species B requires 2.0 units of F1 and 1.7 units of F2. The forest can normally supply at most 888 units of F1 and 497 units of F2 per year. What is the maximum total number of these animals that the forest can support?
A. 382 animals B. 1065 animals C. 397 animals D. 194 animals
Find a formula for the inverse of the function described below.A size 6 dress in Country C is size 44 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = 
- 16
B. f-1(x) = 
C. f-1(x) = x - 16
D. f-1(x) = 
+ 16
Provide the appropriate response.Which polynomial function has the flattest graph in the window 
by 
or 
A. y = x6 B. y = x4 C. y = x2 D. y = x8