Jenna used 3¼ cups of butter for her secret sugar cookie recipe. Her recipe bakes 18 cookies. If she needs to bake 45 cookies for her school’s bake sale, how many cups of butter should she use?

well, 45/18 = 2.5

So she will need 2.5 as much of everything in her recipe
what is 2.5*(3 1/4) ?

do it as 2.5*3.25 or (5/2)(13/4)

can you pleasee help me

thank you so much

thank you so very much

To find out how many cups of butter Jenna should use to bake 45 cookies, we need to first calculate the cups of butter used per cookie in her secret sugar cookie recipe.

Jenna uses 3¼ cups of butter for 18 cookies.

Now, let's find the cup of butter used per cookie:

3¼ cups of butter / 18 cookies = 0.1805556 cups of butter per cookie (rounded to 7 decimal places for simplicity)

To determine the amount of butter needed for 45 cookies, multiply the amount of butter per cookie by the number of cookies Jenna wants to bake:

0.1805556 cups of butter per cookie * 45 cookies = 8.125 cups of butter

Therefore, Jenna should use approximately 8.125 cups of butter to bake 45 cookies for the bake sale.