Kayla spent half her weekly allowance buying pizza. to earn more money her parent let her weed the garden for 10 dollars. what is her weekly allowance if she ended with 18 dollars?

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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b.-4 units

all you   do is count how many times you move