Mandy eats half of a sandwhich and keisha eats half off another sandwhich who eats more?why

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

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