Divide use estimation to check your anwer

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

The weekly revenue for a company is r = 3p^2 + 60p + 1060, where p is the price of the company's product. what price will result in a revenue of $1200.

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?