The inequality would be 6g+32<80. Solving the inequality will be g=8
The 6g stands for $6 per guppy and the +32 refers to the $32 she already spent. The < is there because she doesn’t want to spend any more then $80; however you need the line underneath (I can’t type in on my keyboard) which means less than or equal to $80.
In order to solve the inequality you have to subtract 32 from 80 and then divide by 6 which will give you 8.
Since y varies directly with x, then the constant of proportionality is equal to k=y/x. Since y/x=20/12=5/3, then k=5/3. This means the equation to relate x and y is y=(5/3)x