A vendor buys bananas at 3 for a rupee and sells at 4 for a rupee. Find his profit or loss percentage help me maths geniu​

Roger and natalie travel in similar cars. roger's car drives the two miles to school in 7.5 minutes. natalie drives the same distance in the opposite direction but in only 6.5 minutes. what is true of their velocities?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent