Someone please help me with this question

Find the x-intercept and y-intercept of the line. 3x + 5y = −15

Find the solutions for a triangle with a =16, c =12, and b = 63º

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212