1.6x–(x–2.8)=(0.2x+1.5)–0.7 answer i need a answer in 5 min

Agrocery store has 12 lb of trail mix that is 10% banana chips. the store's manager would like to add banana chips to bring the new mix up to 25% banana chips. write and solve a system of equations to find out how many pounds of banana chips manager needs to add.

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?