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# Tutor profile: Christen D.

Inactive
Christen D.
Math tutor for five years
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## Questions

### Subject:Pre-Algebra

TutorMe
Question:

A 12-pack of pens costs 15 dollars. How much would 36 pens cost?

Inactive
Christen D.

1. Determine how many packs would need to be purchased in order to have 36 pens: 36/12 = 3 packs 2. Multiply the number of packs by the cost of each pack: 3*15 = 45 ANSWER: 45 dollars

### Subject:Basic Math

TutorMe
Question:

A triangle has a base length of 6 in and a height 4 in, what is the area?

Inactive
Christen D.

1. Determine values: base = 6 in height = 4 in 2. Plug values into area equation: Area of a triangle = 1/2(base * height) 1/2(6*4) = 12 in^(2) ANSWER: 12 inches squared

### Subject:Algebra

TutorMe
Question:

500 people attend the opening day of an amusement park. Ticket prices are \$8 for children and \$10 for adults. If total revenue for both is \$4082, how many children and adults attended the event?

Inactive
Christen D.

1. Model with equations: x = number of adults y = number of children x+y = 500 10x+8y = 4082 2. Solve through systems of equations: (elimination method, multiple first equation by -10 to eliminate x variable) -10x-10y = -5000 10x+8y = 4082 3. Add equations together and solve for y: -2y = -918 y= 459 4. Plug y value back into the first equation and solve for x: x+459= 500 x=41 ANSWER: 41 adults and 459 children

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