A hot air balloon ascended to a height of 25 meters 2 minutes after launch. After some time, the balloon's altitude began to change by -2⅕ meters every minute for 7 minutes. To avoid a tree, the balloon flew up by 8½ meters. What is the new altitude of the balloon? expression for problem?

18.1 m

Step-by-step explanation:

For this problem, we will simply use the initial height of 0 meters, the height of 25 meters after 2 minutes, the decline of 2.2 meters every minute for 7 minutes, and a final increase of 8.5 meters to find the final altitude of the ballon.

0m + 25m - 2.2m(7) + 8.5m = ?

25m - 15.4m + 8.5m = ?

9.6m + 8.5m = ?

18.1m = ?

Hence, the final altitude of the ballon is 18.1m.

Cheers.

Multiply 5 by 25 to find the total points Larry needs to score in 5 games. 5 x 25 = 125. Then find the total points Larry scored in the first 4 games. 4 x 23 = 92. Subtract to find the number of points Larry needs to score in the fifth game. 125 – 92 = 33 points. Larry needs to score 33 points in the last game.

Step-by-step explanation:

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