jackie bought 3 pens for $0.95 each how much did she spend for the pens if she paid with a $20 bill how much change will she received​

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Shannon drove for 540 minutes. if she traveled 65 miles per hour, how many total miles did she travel?