First let's add the room cost and the gas.
127+75= 202
Let's subtract that from 300.
300-202= 98
Divide 98 by 20.
20 can only go into 98 4 times.
Amia can only bring 3 cousins, since one of those 4 tickets are for her.
I hope this helped you.
Brainliest answer is always appreciated.
4x - 2y = 14
y = 0.5x -1
Get just one variable on one side for both equations.
4x - 2y = 14 ⇒ 4x = 2y + 14 ⇒ 4x - 14 = 2y
y = 0.5x - 1 ⇒ x - 2 = 2y
Use the transitive property and then solve for x.
x-2 = 4x-14
12 = 3x
x = 4
<em>Edit: Apprently I didn't use substitution. Oops! Sorry...</em>