SOLUTION: The depth of a river, in inches, can be predicted by the average rainfall for a given month as described by the equation y=2x+6.4. If the average rainfall for the month is 1.5 inch

Algebra ->  Probability-and-statistics -> SOLUTION: The depth of a river, in inches, can be predicted by the average rainfall for a given month as described by the equation y=2x+6.4. If the average rainfall for the month is 1.5 inch      Log On


   

Question 1198176: The depth of a river, in inches, can be predicted by the average rainfall for a given month as described by the equation y=2x+6.4. If the average rainfall for the month is 1.5 inches, how deep is the river?
Choose one of the following:
A) 9.4 inches
B) 2.45 inches
C) 12.6 inches
D) 9.0 inches
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

+y=2x%2B6.4
If the average rainfall for the month is 1.5+ inches, means x=1.5

+y=2%2A1.5%2B6.4=3%2B6.4=9.4
the river is 9.4 inches deep