Answer:
The tax rate is 4.3%
Step-by-step explanation:
First, we have to assume $2.79 is 100%. We know that x% equals 0.12 of the output value. Now we have two simple equations: 100%=2.79 and x%=0.12.
Then, 100%/x%=2.27/0.12 and that gives us 4.3%!
Hope this helps.
-3<11
Step-by-step explanation:
-3x+2<11
-3x<11-2
-3x<9
x>-3
To solve this problem, set up and solve a system of equations. The variables b and m will represent a bread loaf and milk jug, respectively:

I would solve using substitution. Take one of the equations and set it equal to one of the variables, for example:

Now, plug this into the other equation for m and solve for b:

We now know that a loaf of bread costs $2.50. Plug this value in for b in the first equation and solve for m:

One jug of milk costs $1.50 and one loaf of bread costs $2.50.