There were approximately 3 x 10^5 firefighters in the United States in 2012. The average salary of a firefighter was $45,000. About how much did all firefighters in the United States earn from their salary altogether in 2012? Express your answer using scientific notation.

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Which of the following is the result of expanding the series

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.