Evaluate the expression.
A. 8
B. 2
C. undefined
D. 16
Answer: A
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Write the expression in the form a + bi, where a and b are real numbers.
? 
A. 2
B. -2i
C. 2i
D. -2
Solve the problem.Strontium 90 decays at a constant rate of 2.44% per year. Therefore, the equation for the amount P of strontium 90 after t years is P = P0 e-0.0244t. How long will it take for 15 grams of strontium to decay to 5 grams? Round answer to 2 decimal places.
A. 4.50 years B. 450.25 years C. 45.03 years. D. 40.50 years
Write the inequality in interval notation.{x |-5 < x ? -3}
A. (-?, -3] B. [-5, -3] C. [-5, -3) D. (-5, -3]
Solve.A woman borrowed $20,000 at 8% interest compounded annually. If the loan was paid off in one lump sum at the end of 5 years, how much did she pay?
A. $28,000.00 B. $29,386.56 C. $21,600.00 D. $9386.56