Nathan buys coffee and hot chocolate for his co-workers. Each cup of coffee costs $1.50 and each cup of hot chocolate costs $1.15. If he pays a total of $12.45 for 9 cups, how many of each does he buy?

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.

answer: i feel you honey.

step-by-step explanation: