Looks like it's already in slope-intercept form.
slope-intercept form: y = mx + b
in this case, m is 8 and b is 4
One mile equals 5,280 feet, therefore you would multiply 12 x 5,280 which is 63360 feet per hour.
3(1+2t)=3t+5
Use distributive property:
3 + 6t = 3t +5
Subtract 3 from both sides:
6t = 3t + 2
Subtract 3t from both sides:
3t = 2
Divide both sides by 3:
t = 2/3
Answer:
The angle: 
The supplement: 
Step-by-step explanation:
By definition, if the sum of two angles is 180 degrees, then this angles are called "Supplementary Angles".
Let be:
the angle (in degrees) and
its suppplement (in degrees).
Therefore, you can write the following equation in order to find the angle and its supplement:

Now, you must solve for "x". Then:

Then:
Answer: 156
Step-by-step explanation:
Rows of seat = 48
Each row contains seat = 03
= 48 x 03
= 144
Front seats = 144 + 12
= 156