write an inequality for each problem.Then solve the inequality.
1. You and the chess teacher have been playing chess for 18 minutes.To make the chess club, you must win the game in less than 45 minutes. How much time do you have to win the chess game?
2. Your phone card allows you to talk long distance for up to 120 minutes. You have been on a long-distance call for 72 minutes. How much longer do you have to talk before your phone card expires?
1. ? IDK I am so sorry?????
2. Subtract 120 min. - 72 min. already used = 48 min. left before your phone card expires.
1.18< x=45
45-18=27
So X=27
2. 72+x=120
120-72=48
So X=48
To solve these problems, we first need to write the inequalities and then solve them step-by-step.
1. Let's define "x" as the amount of time you have left to win the chess game. The inequality can be written as:
x < 45 - 18
Simplifying the equation:
x < 27
Therefore, you have less than 27 minutes remaining to win the chess game.
2. Let's define "y" as the amount of additional time you have to talk before your phone card expires. The inequality can be written as:
y < 120 - 72
Simplifying the equation:
y < 48
Therefore, you have less than 48 minutes left to talk before your phone card expires.