For her exercise today, yolanda plans to both run and swim. let r be the number of laps she runs and let s be the number of laps she swims. each lap she runs takes her 3 minutes, and each lap she swims takes her 2 minutes. she wants to exercise for at least 30 minutes today. using the values and variables given, write an inequality describing this.

Can someone pls ! pls answer all. no explanation needed..

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

According to the 2008 u. s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.