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Firlakuza [10]
3 years ago
12

Doris made 80 cookies this week. She baked 4 less than three times the total she made last week. Which equation, when solved for

x, gives the number of cookies she baked last week?
Mathematics
1 answer:
sertanlavr [38]3 years ago
3 0

Answer:

The equation is  3x-4=80

The value of x is 28 cookies

Step-by-step explanation:

Let

x ---->  the number of cookies she baked last week

we know that

The number of cookies she baked last week multiplied by 3 minus 4 must be equal to 80 cookies

so

The linear equation that represent this situation is

3x-4=80

solve for x

3x=80+4\\3x=84\\x=28\ cookies

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Answer:

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We have been given that the first runner has $112 in savings, received a $45 gift from a friend, and will save $25 each month. Therefore, amount of money in the account of first running after m months will be: 112+45+25m

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In order for amount of money to be equal in accounts of both the runners, we set up:

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Upon rewriting the left hand side using commutative law, we get:

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