Find the area of a trapezoid with bases of 15cm and 6 cm and a height of 1/5cm

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?