The distance d (in miles) you travel in a car is given by the two equations shown, where t is the time (in hours) and g is the number of gallons of gasoline the car uses. two equations: d=55t and d=20g a. write an equation that relates g & t b. solve the equation for g c. you travel for six hours. how many gallons of gasoline does the car use? how far do you travel?

The distance d (in miles) you travel in a car is given by d=55t where t is the time (in hours)

The distance d (in miles) you travel in a car is given by d=20g where g is the number of gallons of gasoline the car uses.

1. Write an equation that relates g & t.

2. Solving for g.

=>

Hence,

3. You travel for six hours. How many gallons of gasoline does the car use

We will use this equation to solve the question.

Putting t = 6

g = 16.5 gallons

4. How far do you travel?

We can use equation here

miles

We want to use functions to find a new function.

The answers are:

a) 55*t = 20*g

b) g = (55/20)*t

c) 16.5 gallons.

We know that:

The equation that relates the distance d (in miles) to time t (in hours) is:

d = 55*t

The equation that relates the distance d (in miles) to gallons of gasoline is:

d = 20*g

A) We want to find an equation that relates g and t.

Notice that in both of the given equations we have isolated "d", then we can write:

55*t = d = 20*g

55*t = 20*g

This is the equation that relates t and g.

B) Now we want to solve it for G:

g = (55/20)*t

C) If you travel for 6 hours, then we have t = 6

g = (55/20)*6 = 16.5

And g is in gallons, this means that to travel 6 hours, the car needs 16.5 gallons of gasoline.

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