A box contains five blue pens, three black pens, and two red pens.
If every time a pen is selected, it is removed from the box, what is the probability of selecting a black pen followed by a blue pen?

A pair of Jump sneakers costs $60 and a pair of Speed sneakers costs $45.
For the two pairs of sneakers to be the same price

Which of the following is an irrational number?

What is the value of x when 2x + 7 = 3x - 5?

Balloons are sold according to the chart above. If a customer buys one balloon at a time, the cost is $1.00 per balloon. If a customer buys ten balloons at a time, the cost is $0.90 per balloon.

If Carlos wants to buy 2,000 balloons, how much money does he save by buying 1,000 balloons at a time rather than ten balloons at a time?