Simplify. Write your answer in the form a + bi, where a and b are real numbers.(8 - 
) + (4 + 
)
A. 12 - 6i
B. 12 + 10i
C. 12 + 6i
D. 12 - 10i
Answer: A
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+ 
A. 
B. 7
C. 
D. 
Solve.When nineteen is reduced by one-third of a number, the result is 17. Find the number.
A. -6 B. 6 C. 9 D. 2
Evaluate the function for the given values of a and b. Then use the intermediate value theorem to determine which of the statements below is true.a = -1, b = 3f(x) = x4 - 7x3 + 11x2 + 10x + 18
A. f(-1) and f(3) have the same sign, therefore f does not have a real zero between -1 and 3. B. f(-1) and f(3) have opposite signs, therefore f does not have a real zero between -1 and 3. C. f(-1) and f(3) have opposite signs, therefore f has a real zero between -1 and 3. D. f(-1) and f(3) have the same sign, therefore the intermediate value theorem cannot be used to determine whether f has a real zero between -1 and 3.
Use the order of operations to simplify the expression.0.65 + 2.5(0.25)
A. 0.7875 B. 0.6275 C. 0.9375 D. 1.275