What number could replace x to make a true statement?
7
3
O4
O 5
O 6

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Bring the fraction a/a-4 to a denominator of 16-a^2

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