Story problem: mount saint helens, a volcano, erupted on may 18, 1980. before the eruption, mount st. helens was 2,950 meters high. after the eruption, it was 2,550 meters high. question 1: what is the difference in height of mount st. helens before and after the eruption, expressed in meters? question 2: before the eruption, how many kilometers high was mount st. helens?

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

6x + 3y = -6 2x + y = -2 a. x = 0, y = -2 b. infinite solutions c. x = -1, y = 0 d. no solution

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.