Plz me with this one)) click the photo above^^^
question: convert the following phrase into a mathematical expression. use x as the variable, and combine like terms.
two times a number, added to the sum of the number and three
the expression is? ?

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