Solve. Provide answers in interval notation.9 ? 
A. 
B. 
? 
C. 
? 
D. 
Answer: C
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Use the power property to rewrite the expression.log4 y7
A. 7log4 y7 B. 7log4 y C. 4log7 y7 D. 4log7 y
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(-4 + 9i) - 2
A. -2 + 9i B. -2 - 9i C. 6 - 9i D. -6 + 9i
Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place.The radiator in a certain make of car needs to contain 
of 40% antifreeze. The radiator now contains 
of 20% antifreeze. How many liters of this solution must be drained and replaced with 100% antifreeze to get the desired strength?
A. 25 L B. 20 L C. 12.5 L D. 16.7 L
Solve the problem.The recipe for a chocolate chip cake calls for 
pound of chocolate chips. If a bakery wants to make 20 cakes, how many pounds of chocolate chips will they need?
A. 20 pounds B. 5 pounds C. 16 pounds D. 4 pounds