A cell phone company charges $39.99 flat fee each month, plus $0.05per minute. If m represents the number of minutes used in a month, which expression can be used to calculate a monthly payment?

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?

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180