Write this ratio as a fraction in simplest form without any units.
40 days to 5 weeks

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"