It's 42, here's a quick trick to do this, so we know there's 7 movies, and to find the combination we know we can't choose 2 of the same movie, so to make this part easier , in your head take one movie from the stack out of the stack now there's 6 movies. It's now just the "plug and play" step , (7)*(6)=(42)
I'm sorry If this is to long of an explanation, but I hope that this helps you understand on how to do this problem. Have a nice day :)
2 x + 4 = 4 x - 2
2 x + 4 + 2 = 4 x - 2 + 2
2 x + 6 = 4 x
2 x - 2 x + 6 = 4 x - 2 x
6 = 2 x
6 : 2 = 2 x : 2
x = 3
Answer: A ) add 2 , subtract 2 x, then divide by 2
Gallons of gas needed = 220/23 = 9.565 gallons
Amount of money spent on gas = $2.35 x 9.565 = $22.48
Lol k lol k lol k lol k it’s over 9,000
