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# Tutor profile: Eric G.

Inactive
Eric G.
Math and Earth Science Teacher - 12 years teaching experience
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## Questions

### Subject:Environmental Science

TutorMe
Question:

Define ecological footprint.

Inactive
Eric G.
Answer:

The impact of a person or group on the environment, expressed as the land required to sustain the use of those natural resources.

### Subject:Earth Science

TutorMe
Question:

What is an example of each step in the water cycle?

Inactive
Eric G.
Answer:

Precipitation - Rain Condensation - Clouds Transportation - Runoff, streams and rivers Evaporation - Steam Transpiration - "sweat" from trees

### Subject:Algebra

TutorMe
Question:

Samantha is moving from Madison, WI to La Crosse, WI. She will do all of the packing and unpacking by herself with her brother. The moving company quoted a price of \$1,250 for 8 hours of loading and unloading and driving 130 miles. The company quoted the same price if the truck drives an extra 30 miles to pick up Samantha’s brother. Samantha figures that with her brother’s help she only needs to hire the movers for 6 hours. How much does the company charge per hour for the loading/ unloading? How much do they charge per mile for driving?

Inactive
Eric G.
Answer:

8x+130y=1250 6x+160y=1250 Multiply by 6 and -8 to get common x to solve by elimination. 48x+780y=7500 -48x-1280y=-10000 Add equations to get one variable. -500y=-2500 Divide to solve for y. y=\$5/mile Substitute back into either original equation to solve for x 8x+130(5)=1250 Solve for x 8x+650=1250 8x=600 x=\$75/hr

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