Answer:
y = 2x + 20
[tex]y\geq 20[/tex]
[tex]x\geq 0[/tex]
Step-by-step explanation:
Vlad spent 20 minutes on history. Then Vlad spent 2 minutes on each math problem for homework, this is 2x. So in total, he spent 20+2x on homework. Depending on how many problems he did, the total time y can be found. This is the equation 20+2x=y.
If Vlad did 0 math problems then he spent at least 20 minutes on homework from history. This is the constraint [tex]y\geq 20[/tex].
We also know Vlad can do many math problems but the least amount he did was 0, so the second constraint is [tex]x\geq 0[/tex].
