I NEED HELP ASAP Which is an expression for the area of △ABC?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.