Prove that the set of all real value of continuous or function of X defined is som1 interval is a vector space ​

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?

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0