Astudent has some $1 and $5 bills in his wallet. he has a total of 16 bills that are worth $56. how many of each type of bill does he have?

Una caja de galletas contiene 16 paquetes y cada una de estas tiene 12 galletas y se quieren repartir entre 6 niños ¿de cuantas galletas le toca a cada niño?

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?

Which of the following parabolas opens up?