157.5
$5.75 x 10 = 57.5
$2.25 x 20 = 45
$5.00 x 11 = 55
then you add all them together and you get 157.5
I think you mean b is not equal to 0.
We have that 11.424242... = 11 + 0.424242...
Now let x = 0.424242...
Then 100x = 42.424242...
Now 99x = 100x - x = 42 so 99x = 42 and therefore x = 42/99
Now we can simplify 42/99 to 14/33
Now combining this we get 11.424242... = 11 + 14/33
= 363/33 + 14/33 = 377/33
The answer i think is -10
