Answer:
8 Pounds
Explanation:
An equation we can use to solve this will look like this:
33 + (12 × number of pounds of beef)
Now just insert a number into the equation:
33 + (12 × 12) = 177
This is too much money.
Lets try a different number.
33 + (12 × 9) = 141
This is still too much money.
Lets try 8.
33 + (12 × 8) = 129
If Bob buys 8 ponds of beef, then he will spend $129.