Mateo went out to eat dinner, and the meal cost $30.00. If Mateo received a 12% discount, what was the total value of the discount?

 a product that normally costs $30 with a 12 percent discount will cost you $26.40, and you saved $3.60. You can also calculate how much you save by simply moving the period in 12.00 percent two spaces to the left, and then multiply the result by $30 as follows: $30 x . 12 = $3.60 savings.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

step-by-step explanation:

no solution.