Adele bought a dress that was on sale for 20 percent off the regular price of $129.00. if a 7 percent sales tax was added to the sale price, what was the final cost of the dress? a) 103.20
b) 110.42
c) 119.97
d) 154.80

original price = $129

20% discounted price = $103.2

adding 7% sales tax = $110.424

OPTION B  =  110.42

22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.

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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