Mike moved 345 chairs and gavin moved c more than mike. How many chairs did gavin move in terms of c

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?

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12