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torisob [31]
4 years ago
9

Mr. Johnson is also comparing the two mobile phone data plans. Talk First charges $20 plus $5 per GB of data, while Mobile Plus

charges $30 plus $3 per GB of data. At what amount of GB use will the cost of the two data plans be the same? Mr. Johnson wrote this equation for the scenario.
1. d = amount of data used (GB)

2. Talk First = Mobile Plus

3. 20d + 5 = 30d + 3

Analyze Mr. Johnson’s work and identify his mistake.
A In step 1, his variable should be c, representing company.
B In step 2, his translated equation should be Talk First + Mobile Plus = Total
Money.
C In step 3, he multiplied the variable by the base monthly cost instead of by the
cost per GB.
Mathematics
1 answer:
DedPeter [7]4 years ago
7 0

Answer:

2

Step-by-step explanation:

number 2 is incorect

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Answer:

It would cost more to go to the zoo by $6

Step-by-step explanation:

The total amount that each attraction costs can be given by;

<em>Science center</em>

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where;

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Substituting;

36.75=c×3

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7 0
3 years ago
A recipe that yields 12 cups of soup calls for 28ounces of beef broth. How many ounces of beef broth do you need to make 18 cups
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We will ratio to solve this problem.
Given the first information, we know that for 12 cups of soup, there are 28 oz of beef broth. This can be expressed as 28/12.

With the second information, we know that for 18 cups of soup, there is x amount of beef broth. This can be expressed as x/18
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28/12=x/18
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