This week, jamyra spent a total of 100 minutes studying. this total was 8 more than four times the amount of minutes she studied last week. how many minutes did jamyra spend studying last week?

23 minutes

Step-by-step explanation:

4x + 8 = 100

100 is 8 more than 4 times of minutes than last week.

X = minuted she studied last week.

Find x

4x = 100 - 8

4x = 92

x = 92/4

x = 23 minutes

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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