3x+2y=10
12x+5y=25

solve by substitution or elimination

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?