Brittany's lemonade stand costs $90 to build and each cup of lemonade costs $2 in ingredients. How many cups of lemonade must she sell to break even if she sells each cup for $4?

She must sell 45 cups of lemonade to break even.

Step-by-step explanation:

Given:

Brittany's lemonade stand costs $90 to build and each cup of lemonade costs $2 in ingredients.

If she sells each cup for $4.

Now, to find the quantity of cups of lemonade she must sell to break even.

$2 for each cup of lemonade ingredients:

And, she sells per cup for $4.

So, her profit for per cup is:

Let the quantity of cups of lemonade be

Cost of Brittany's lemonade stand = $90.

Now, to get the quantity of cups we set an equation:

Dividing both sides by 2 we get:

The quantity of cups of lemonade = 45.

Therefore, she must sell 45 cups of lemonade to break even.

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.