Evaluate.
, for p = 28 and q = 7
A. 16
B. 96
C. 84
D. 28
Answer: A
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Write the logarithmic equation in its equivalent exponential form.log4 
= -3
A. 4-3 = 
B. 34 = 
C. 
3 = 4
D. 464 = 3
Solve the problem.The decay of 243 mg of an isotope is given by 
where t is time in years since the initial amount of 243 mg was present. Find the amount (to the nearest milligram) left after 72 years.
A. 89 B. 45 C. 87 D. 240
Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.Two different tests are designed to measure employee productivity and dexterity. Several employees are randomly selected and tested with these results.
A. y = 5.05 + 1.91x B. y = 75.3 - 0.329x C. y = 10.7 + 1.53x D. y = 2.36 + 2.03x
Find the cofactor of the indicated element of the matrix shown.a22;
A. 7 B. -1 C. 1 D. -7