How many real roots does the function f(x)=x^2+8x-2

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

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

Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?