Find the product 2 5/8 x 1 1/7 then write in simplest form

  3

Step-by-step explanation:

Using improper fractions ...

  21/8 × 8/7 = (21·8)/(7·8) = (21/7)·(8/8) = 3·1 = 3

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50