Solve for y. 3.23(y – 18) - 19.17 = -19.17

у = ?

*please explain to me, step by step, how you got the answer, too, so I can understand.

The product of two negative rational numbers is always zero sometimes zero never zero

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Nine more than four times a number is the same as one less than twice the number. find the number?