There's 2 variables and only 1 equation given, please check that you entered the problem correctly.
I'm going to assume that should be (c-4d=1) and (2c-8d=2)
multiplying the first equation by 2 will actually give you the same equation as the second, so this is the same line. they intersect at every point, so all real numbers is your answer!
Hi! Let's divide 4000 by 1000 to see what .1% would be: $4. Now we multiply 4 by 36 to get 3.6% of 4000: $ 144 Add 4000 and 144 together:40144. hope this helps!
