400 = 45x + 30x
400 = 75x
5.333 = x
Lets test
45mph for 5.333 hours = 240 miles
30mph for 5.333 hours = 160 miles
240 + 160 = 400 miles apart.
Answer:
Not correct
Step-by-step explanation:
![\frac{1}{4}(8y-12)](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%288y-12%29)
means multiply
by 8y and then multiply
by -12
![\frac{1}{4}(8y)=2y](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%288y%29%3D2y)
![\frac{1}{4}(-12)=-3](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%28-12%29%3D-3)
then the answer must be 2y -3 not 2y -12
To calculate the price with markups, we add the original price to the amount of markup.
15,000 + (0.15*15,000) = 15,000 + 2,250 = 17,250
5 because 14x5 equals 70 and you add the 1 blue paint each time so it’d be 75 total