If the value of a in the quadratic function f(x)=ax^2+bx+c is -2, the function will ___. a. open up and have a maximum
b. open up and have a minimum
c. open down and have a minimum
d. open down and have a maximum

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