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Valentin [98]
4 years ago
10

Which of the following describes the correct process for solving the equation 3x+6=21 and arrives at the correct solution?

Mathematics
1 answer:
My name is Ann [436]4 years ago
4 0
The correct solution is C

Subtract 6 from both sides of the equation
        3x + 6 - 6 = 21 - 6
        3x = 15

Then divide both sides by 3

       \frac{3x}{3}   =    \frac{15}{3}
       
       x = 5

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The organizers of a fair projected a 25 percent increase in attendance this year over that of last year, but attendance this yea
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Answer:

The correct option is C

Step-by-step explanation:

The organizers of a fair projected a 25 percent increase in attendance this year over that of last year

Let x = the attendance for last year

The projected attendance for this year would be last year's attendance + 25% of last year's attendance. This means

Projected attendance for this year

= x + 25/100 × x

= x + 0.25x = 1.25x

But attendance for this year actually decreased by 20 percent.

This means the actual attendance for this year would be

attendance for last year - 20% of attendance for last year. This means

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percentage of the projected attendance that was the actual attendance would be

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= 64%

The correct option is C

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