Answer:
X=16
Step-by-step explanation:
according to the diagram above in the attached file
(8x-8)=(7x+8)
8x-7x=8+8
X=16
The answer you want is 20!
Answer:
The car's average 18 number of miles per gallon
Step-by-step explanation:
The car has different efficiencies depending if its used on highway or city streets.
The efficiency on a highway is:

The efficiency for city driving is:

We now that the car uses twice as many gallons for city driving as for highway driving. This means that, for every gallon consumed, 2/3 are for city driving and 1/3 are for highway driving.
Then, we can calculate how many miles makes the car on average as:

Answer:
10000
Step-by-step explanation:
multiply 100 by 100 then multiply that 4 times of the same number
14) the slope for the first problem is -2/8.
Not proportional
15) The slope is 1/6.
Not proportional
16) The slope is 0.
Not proportional
To determine whether x and y have a proportional relationship, see if the line through these points passes through the origin (0, 0).
Hope this helps! Merry Christmas!✨❤️