Question

Katelyn wants to by $75.00 skateboard she has $25.00 saved so far. she mows lawns to make extra money and earns $20.00 for each lawns she moans. which inequality can be used to determine the number of lawns, x she needs to mow to have enough money to buy the skateboard?

Answer 1

Let x be the number of lawns Katelyn needs to mow to have enough money to buy the skateboard.

She currently has $25.00 saved, and each lawn she mows earns her $20.00. So the total amount of money she will have is:

25 + 20x

In order to have enough money to buy the skateboard, this amount must be greater than or equal to $75.00.

So the inequality is:

25 + 20x ≥ 75

Simplifying the inequality, we get:

20x ≥ 50

x ≥ 2.5

Since Katelyn cannot mow a fractional part of a lawn, she must mow at least 3 lawns to have enough money to buy the skateboard.

Therefore, the inequality that can be used to determine the number of lawns Katelyn needs to mow is x ≥ 3.