A car travels 30\frac{1}{5} miles in \frac{2}{3} of an hour. What is the average speed, in miles per hour, of the car?

Can someone me with these two circle theorem questions asap?

How do newtons third law of motion demonstrates on a rollar coster

Luisa sells stuffed animals. she sells her stuffed elephant for $34.90, and the sales tax is 6% of the sale price. about how much is the sales tax on the elephant?