How fast are you going if you travel 45 miles in 60 minutes?
A. 3/4 miles per hour
B. 45 miles per hour
C. 60 miles per hour
D. 80 miles per hour

B. 45 miles per hour

Step-by-step explanation:

The question is asking for the speed.  Speed is found by taking the distance and dividing by the time

We need to convert the time from minutes to hours

60 minutes = 1 hour

speed = distance / time

           = 45 miles / 1 hour

           = 45 miles per hour

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value