1.3 times 10 is 13 and 13 to the 15th power is 51185893014090760
The y-value changes from 10 to 70 as the x-value changes from 0 to 10. That makes the slope (70 -10)/(10 -0) = 6, and the y-intercept = 10.
Selection A is the appropriate equation.
Here is a picture with the answer.
