What is the discriminant of x² - 5x + 6 = 0?

The slope of a line through points (2 3) and (4 7) is?

What is the sum of arithmetic series: first term 1 last term 100 with 100 terms?

How many ways can 4 people be arranged in a line?

If log base 2 of x equals 5 what is x?

What is the value of (1/2) raised to the power of negative 2?

A and B together do a job in 12 days. A alone takes 18 days. How long does B take alone?

If P(A)=0.4 and P(B)=0.3 and events are mutually exclusive what is P(A or B)?

What is 40% of three-quarters of 200?

A pipe fills a tank in 6 hours another empties it in 8 hours. Both open: how long to fill?

What is the equation of a line with slope 3 and y-intercept negative 2?