Marcus' school is selling tickets to a spring musical. On the first day of ticket sales the school sold 3 adult tickets and 9 child tickets for a total of $75. The school took in $67 on the second day by selling 8 adult tickets and 5 child tickets. What is the price each of one child ticket?

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3