Carl's age is three more than two times Lindsay's age. Carl is 39 years old. How old is Lindsay? Let L=Lindsay's age in years. Write the equation that represents this problem. Explain how you used math to write the equation.

Flashback to semester a. are triangles pqr and stu congruent? what is the congruency that proves they are congruent? what is the perimeter of triangle pqr? show your work.

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.