Use mental math to guess the starting value for the table.
Between 12 and 13
Practice makes perfect
We want to use a table to estimate the solution of the given equation.
3m-13=24
In order to choose a good starting point for our table, let's pretend that the equation is 3m=24. What multiplied by 3 would get us close to 24? The value 8 gives 24 precisely, so let's try that in our table. From there, we will keep testing until we get the result we want or very close.
m
3m-13
=
Result
8
3( 8)-13
11
Not even close
10
3( 10)-13
17
Right direction, but still pretty far
12
3( 12)-13
23
Very close!
13
3( 13)-13
26
A little too far
Since 12 got us very close to 24 and 13 took the result slightly too far, we know that the solution is between 12 and 13.
