You sign up for karate classes. the classes cost $80dollar sign. write an equation for the number of dollars, d, that you pay for your karate classes if you take classes for m months.

Write an equation for the number of dollars, d, that you pay for your karate classes if you take classes for m months.

I am assuming the cost is 80 dollars per month

d = 80m

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.  

the answer to the expression is 83