Stephen won tickets playing the pool game at the local arcades The first time, he won 90 tickets. The second time, he won a bonus, which was 5 times the number of tickets of the the original second prize. Altogether he won 300 tickets. How many tickets was the original second prize? Show your work.

Which expression gives the area of the triangle shown below

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

What is the value of the discriminant of the quadratic equation -2x = -8x + 8 and what does its value mean about thenumber of real number solutions the equation has?