Bryan took a total of 15 quizzes over the course of 5 weeks. After attending 10 weeks of school this quarter, how many quizzes will Bryan have taken in total

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?

Taking algebra two apex courses and need with these questions

What is the area of a pizza with a radius of 40 cm leave the answer in terms of π to find your exact answer 40π cm² 1600π cm² 800π cm² 80π cm² π=pi