I Need help its 10 points
Given:

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?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.