Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = 
, In = 
B. Im =
, In = 
C. Im = 
, In = 
D. Im = 
, In = 
Answer: D
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Solve the problem using the table.Monthly Principal and Interest Payment per $1000 of Mortgage
The Govonis' monthly income is $8500. They have 15 remaining payments of $253 on a new car and 17 payments of $68 remaining on their living room furniture. The taxes and insurance on the house are $145 per month. The Govonis want a 25-year, $245,000 mortgage. Do they qualify for this mortgage with a 10% interest rate?
A. Yes B. No
Solve the problem. Round your answer to the nearest tenth, when appropriate.A rock falls from a tower that is 98 m high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
A. 4.5 sec B. 1960 sec C. 9.6 sec D. 9.9 sec
Find the location of the indicated absolute extrema for the function.Minimum
A. (-2, 0) B. None C. (2, 0) D. (-3, -2)
Use a commutative property to complete the statement. Do not simplify.-7 ? a = 
A. 7 ? -a B. a ? (-7) C. a - (-7) D. a + 7