Find the value of the determinant.
A. -36
B. -12
C. 36
D. 76
Answer: A
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Solve the problem. Express the answer in scientific notation to two decimals unless requested otherwise.The median family income in a certain year was $46,676 and there were about 7.2 × 107 families. Calculate the total family income for that year.
A. $336 × 1012 B. $2 × 1012 C. $3.36 × 1012 D. $3.36 × 10-12
Write an equation for the parabola.
A. y2 = -4x B. x2 = -4y C. y2 = 4x D. x2 = 4y
Solve the problem.How long will it take for $3000 to grow to $38,800 at an interest rate of 6.2% if the interest is compounded continuously? Round the number of years to the nearest hundredth.
A. 4.13 yr B. 0.41 yr C. 4128.72 yr D. 41.29 yr
Solve the problem.A rock falls from a tower that is 93.1 m high. As it is falling, its height is given by the formula h = 93.1 - 4.9t2.How many seconds will it take for the rock to hit the ground 
A. 4.4 sec B. 9.6 sec C. 9.4 sec D. 1768.9 sec