Systems of equations having an infinite number of solutions are lines that do not meet or intersect. These line are parallel which they have the same slope but different y-intercepts. By graphing the equations and using the choices, we will see that all except 10 can be the answer.
4 thousands = 4000
7 hundreds = 700
16 tens = 160
9 ones = 9
Then you add them all together:
4000 + 700 + 160 + 9
Your answer is 4869.
