Please helppp fast!!Simplify (4x^5)^2 (x^10)^1/2

In what organelle does photosynthesis take place?

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

Agallon of apple juice cost $7 a pack of eight 4.23oz box of apple juice $2.39 which is a better deal