What is the overall length of 2panels where each is 2 3/4 foot long

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

What percent of 18 is 24? and plz explain thx.