Laura tiene en su cuenta ahorro del banco $23.500. Si paga el recibo de la luz que son $12.000 además también paga el recibo del teléfono que son $13.500. ¿Cuánto dinero queda en su cuenta?

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Having a hard time understanding this question (see attachment).