-500
Step-by-step explanation
Step 1
a function is a relation where a variable depends on the other, in this case, we have
![y=-500+15x](https://img.qammunity.org/2023/formulas/mathematics/college/zqkr9qeslaixys0sm7sndt49t6tlud0t0e.png)
it means that the value for y depends on the value you put for x, then to find the missing value, just find f(0)
Step 1
![\begin{gathered} f(0)=-500+15\cdot0 \\ f(0)=-500 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/chqgft14q5fyuzwkkte2cpozflwt21fqej.png)
Hence, the answer is -500