Kate set up a lemonade stand in her front yard, where she hopes to make at least $18 in profit. She makes $0.69 profit on every regular cup sold and $0.37 profit on every small cup sold.
Write the inequality in standard form that describes this situation. Use the given numbers and the following variables.
x = the number of regular cups of lemonade Kate must sell
y = the number of small cups of lemonade Kate must sell
The profit from selling regular cups of lemonade is $0.69 * x
The profit from selling small cups of lemonade is $0.37 * y
The total profit should be at least $18, so we have the inequality:
0.69x + 0.37y ≥ 18