a 20-ounce bag of popcorn costs $2.80. if the unit price stays the same, how much does a 35-ounce bag of popcorn cost?

Right.

$2.80/20 = x/35

Divide $2.80 by 20 and multiply by 35.

20/2.80=35/x

20x=35*2.80
20x=98
divided by 20 on both sides
x=4.90?

thank you.

20/2.80 = 35/x

Cross multiply and solve for x.

You're welcome.

To find the cost of a 35-ounce bag of popcorn when the unit price stays the same, we can use a simple proportion.

The unit price remains constant, which means that the price per ounce of popcorn in the 20-ounce bag is the same as the price per ounce in the 35-ounce bag.

Let's calculate the unit price in dollars per ounce using the given information. The cost of the 20-ounce bag is $2.80.

The unit price can be calculated by dividing the total cost by the number of ounces:
Unit price = Total cost / Number of ounces

In this case, the unit price is:
Unit price = $2.80 / 20 ounces = $0.14 per ounce

Now that we have the unit price, we can find the cost of the 35-ounce bag by multiplying the unit price by the number of ounces:
Cost of 35-ounce bag = Unit price × Number of ounces

Applying the values:
Cost of 35-ounce bag = $0.14 per ounce × 35 ounces

Calculating this expression gives us:
Cost of 35-ounce bag = $4.90

Therefore, a 35-ounce bag of popcorn would cost $4.90 if the unit price remains the same.