Danielle's text messaging plan charges 30¢ for each message over 350 in addition to a $13 base charge. If she owes $83.50 for text messaging in the month of April, how many text messages did she send that month?

Which variable do we solve for when using the quadratic formula

Use the eliminatio method to solve the system of equations. Choose the correct order pair: 3x+5y=48 - 3x+5y=12

3^x - 7 = 7 What is the value of " X" and how did you find it?

What is £41 deacreased by 90%?

What 4 2/5 as a improper fraction

Solve for v in terms of s, t, an u. U=tsv

Two cities are 2310 miles apart. a plane leaves one of? them, traveling towards the other at an average speed of 380 miles per hour. at the same time a plane leaves the? other, traveling towards the? first, at an average speed of 390 miles per hour.

What expression is equivalent to x+x+x+2

Todd ran 8 laps around a 400-meter track on monday, 4laps on tuesday, 8 laps on wednesday, 4 laps on thursday, and 8laps on friday. how many kilometers did he run?

Amanda found that the equation 10x+5y=20 in the "Linear Equations" chapter of her math book What is an equation that can be written with Amanda's equation to for a pair of linear equations such that the system of equations has exactly one solution?