A statistical analysis is being done to measure the academic performance of a school, to this it is necessary to biuld a statistical model to compare and measure; choose the appropriate correct model for the following variables (linear regresion or multiple linear regression)

Variables:

1. marks of students in different subjects

2. No. of hours they study in total

3. No. Of hours they study in each subject

build the model

Note: you don't need to solve the model, just build it with the variables, and explain what the variables mean in the equations you build. (the model equation must be correct)

If you want, you can add other variables related to the topic, as long as they can be measured statistically.