help please
Answer options:

A. 18.86
B. 120
C. 13.37
D. 6.43

Which matrix multiplication is possible?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

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