Two thirds a number d to the third power

In a school 2/3 of the students study a language of those who study a language 2/5 study french

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).