Eight times the difference between a number and six is equal to four times the number. What’s the number?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Which of the following statements is a true conclusion that can be made from the scaled bargraph?