2.8392222e+17
Step-by-step explanation:
283838383838382828 + 83838383888282=2.8392222e+17
Answer:
x+ 134 is less than or equal to 400 is the answer
Unfortunately you cannot use logs to solve this.
However, it shouldn't take too long to use guess-and-check to see that

Showing that x = 2 is the solution to the equation.
You can use a graphing calculator to graph out
and
. The two curves cross at (2,13). The x coordinate of that intersection is what we're after. GeoGebra and Desmos are two free options you can pick from in terms of a graphing calculator.