The dimensions of two matrices are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A is 2 × 2; B is 2 × 2.
A. AB is 2 × 4; BA is 2 × 4.
B. AB is 4 × 2; BA is 4 × 2.
C. AB is 1 × 1; BA is 1 × 1.
D. AB is 2 × 2; BA is 2 × 2.
Answer: D
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Find the indicated probability. Round your answer to 6 decimal places when necessary.A fair die is rolled. What is the probability of rolling an odd number or a number less than 3?
A. 
B. 1
C. 
D. 
At the given point, find the slope of the curve or the line that is tangent to the curve, as requested.5x2y - ? cos y = 6?, tangent at (1, ?)
A. y = ?x
B. y = -2?x + 3?
C. y = - 
x + 
D. y = -2?x + ?
The rectangular coordinates of a point are given. Express the point in polar coordinates with 
and 
A. 
B. 
C. 
D. 
A city's main well was recently found to be contaminated with trichloroethylene (a cancer-causing chemical) as a result of an abandoned chemical dump leaching chemicals into the water. A proposal submitted to the city council indicated that the cost, measured in millions of dollars, of removing x% of the toxic pollutants is given by 
.
?
Find the vertical asymptote of C(x). Is it possible to remove 99% of the toxic pollutant from the water?
?
A. Vertical asymptote: 
It is possible to remove 99% of the toxic pollutant from the water
B. Vertical asymptote:
It is not possible to remove 99% of the toxic pollutant from the water
C. Vertical asymptote:
It is possible to remove 99% of the toxic pollutant from the water
D. Vertical asymptote:
It is not possible to remove 99% of the toxic pollutant from the water