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?

Martha needs 22.25 strawberries for every 5 smoothies she makes. complete the table to see how many strawberries she would need to make 10 smoothies and 20 smoothies.

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?