Stepahnie opened a savings account and adds the same amont of money every month. On the third month, she had 850. On the sixth, she had 1000. How muhc money did she have in her savings account when she opened it

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?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Asphere has a diameter of 10 in. what is the volume of the sphere?