Answer
Find out the how much he makes if he sells 19 cars .
To proof
let us assume that the best estimate he makes if he sells 19 cars = x
As given
Renaldo makes $886.75 for each car that he sells.
than the equation become in the form
x = 19× 886.75
x = $16848 .3 (approx)
than the best estimate of he makes if he sells 19 cars be $16848.
Hence proved
