A.
The initial weight of the goldfish is 0.5 ounces.
Then, for each inch it grows, its weight increases by 0.15 ounces.
So, using the variable r to represent the number of inches it grew, we can write the following equation to determine the value of x for a weight of 1.1 ounces:
![0.5+0.15r=1.1](https://img.qammunity.org/2023/formulas/mathematics/college/kafovdhk8dbj1p1tid26tr5gmyw1ar7zg8.png)
B.
Solving the equation for r, we have:
![\begin{gathered} 0.15r=1.1-0.5 \\ 0.15r=0.6 \\ r=(0.6)/(0.15) \\ r=4 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/imt00zy9cciwi23fzl1r9q4lrb1o61pr0v.png)
It needs to grow 4 more inches.