Calculus question

Question

The function r(t) is the rate that knee replacement surgeries are performed in the United States in thousands of surgeries per month and t is the number of months since the beginning of 2014. There were about719,000 knee replacement surgeries in 2014. Choose the correct expression.

              

            12

a. 719  f     r(t) dt = 0
             0

 

             12

b. 1000 f    r(t) dt = 719

             0

      12

c.  f    r(t) dt = 719

      0 

 

      1

d.  f    r(t) dt = 719,000

      0

 

 

               12

e. 719 + f     r(t) dt = 1

               0

Answer 1

Answer is C