Forty-eight decreased by a number is the same as the difference of four time the number and 7. find the number.

Find all the values of x that make 0.1x + 0.25(102 - x) < 17.10 true.

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?

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation