Pippy and her 3 friends want to make at least $140 from selling lemonade. It cost them $15 for the lemons. So far, they have sold $95 worth of lemonade." Write an equation to determine the amount of money they still need to raise to meet their goal.

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.

Carmen and matt are conducting different chemistry experiments in school. in both experiments, each student starts with an initial amount of water in a flask. they combine two chemicals which react to produce more water. carmen's experiment starts with 30 milliliters of water in a flask, and the water increases in volume by 8.5 milliliters per second. matt's experiment starts with 10 milliliters of water and increases in volume by 28% each second.

Kite abcd is rotated 180 degrees clockwise about the origin and then reflected over the y-axis, followed by a reflection over the x-axis. what is the location of point a after the transformations are complete?