Karen is buying Pena’s and pencils for the new school year

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Mallory has been offers two different jobs. she can baby sit for 6 hours a week and get $8.50 an hour. or she can work at the library for 14 hours a week and make $5.50 an hour. which job will allow her to save the most money after 6weeks?

Iknow the square root of 2 is irrational