# Week 4 Algebra questions

Anonymous

### Question Description

Determine whether each equation has the given ordered pair as a solution.

3q-2p=-8;(1,-2)

question 2

fuel cost involved in idling your car engine for 5 minutes per day when the cost of gasoline is \$3.75 per gallon using the formula c = 19a – 4 where c is the cost and a is the size of the engine in liters. Determine the size of the engine in your car and find the cost of idling your car engine for 5 minutes per day

Tutor_StefanD
School: University of Virginia

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Surname1
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February 5, 2019
Week 4 Discussion 4
Question 1
3q-2p = -8; (1,-2)
Arranging them into the form of y=mx+c
3q=2p-8
Substituting:
3(-2) =2(1)-8
-6= 2-8
-6= -6
Therefore the point is a solution of the equation

Surname2
Question 2
Cost of gasoline= \$3.75
Formula: c= 19a-4
c= cost
a= size of engine
substituting:
3.75= 19a-4
3.75+4= 19a
a= 7.75/19
a= 0.41
If 3.75 is the number of gallons consumed in a day, what about 5 minutes?
1 day= 1440 minutes
Therefore: (3.75/1440) x 15
= 0.04 gallons
Cost= 0.04x...

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