Jon's dog weighed 7 pounds when he got him. the dogs weight tripled each year for 2 years. how many ounces does john's dog now way?

The circumference of a redwood tree trunk is 20π ft, and it is 100 ft tall. what is the approximate volume of the redwood tree trunk? 1,000π ft3 10,000π ft3 4,000π ft3 40,000π ft3

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)

Hello i need with my math homework i don't understand can someone explain how this works