You downloaded 2 DVDs and 10 songs for $18. Your friend downloaded 3 DVDs and 15 songs for $27. Write a system of linear equations that represents this situation. Solve the system to determine the price
of each DVD and each song.

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Which value is not a solution of 8x^3 – 1 = 0