3out of 4 students have smart phones what percent of the students have smart phones? what percent dose not own one

Solve |2x - 5| = 4 if anyone could , that would be great

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

The owner of the plant nursery where you were tells you to fill 350 ml bottles from a 30 l from a fertilizer