Perform the indicated operation. Write the result in the form a + bi.6i + (-9 - i)
A. 9 - 5i
B. -9 + 7i
C. -9 + 5i
D. 9 - 7i
Answer: C
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Factor the polynomial completely.(p + q)2 - (p - q)2
A. pq B. 0 C. 2p - 2q D. 4pq
Find the intervals on which the function is continuous.y = 
A. discontinuous only when x = 15 B. continuous everywhere C. discontinuous only when x = -24 D. discontinuous only when x = -3
Solve the problem.The table shows the number of deaths due to car accidents in a certain city in various years. 
Let n = f(t) be the number of deaths due to car accidents at t years since 2012. Suppose that you wish to model f using a quadratic equation. What is the vertex of the model? What does it mean in this situation?
A. (3, 270); the largest number of deaths due to car accidents was 270 in 2015 B. (5, 219); the smallest number of deaths due to car accidents was 219 in 2017 C. (0, 202); the smallest number of deaths due to car accidents was 202 in 2012 D. (2, 261); the largest number of deaths due to car accidents was 261 in 2014
Solve the problem.A baseball team is trying to determine what price to charge for tickets. At a price of $10 per ticket, it averages 50,000 people per game. For every increase of $1, it loses 5,000 people. Every person at the game spends an average of $5 on concessions. What price per ticket should be charged in order to maximize revenue?
A. $7.50 B. $2.50 C. $5.00 D. $12.50