Answer:
The equation is [tex]3x-4=80[/tex]
The value of x is 28 cookies
Step-by-step explanation:
Let
x ----> the number of cookies she baked last week
we know that
The number of cookies she baked last week multiplied by 3 minus 4 must be equal to 80 cookies
so
The linear equation that represent this situation is
[tex]3x-4=80[/tex]
solve for x
[tex]3x=80+4\\3x=84\\x=28\ cookies[/tex]
