( - 5 x² + 8 x ) + ( 2 x² - 3 x + 7)
= - 5 x² + 8 x + 2 x² - 3 x + 7
= - 3 x² + 5 x + 7
Answer:
414.72 km
Step-by-step explanation:
formula: velocity= distance traveled by the time or v= d/t
velocity: 23.04 km/m
time: 18 min
distance: x
you have to change the formula a little bit
distance= velocity times time or d=v times t
23.04 times 18= 414.72
Answer: $14.4
Step-by-step explanation:
To calculate the tip, you need to multiply the bill times .2. So 72x .2 = 14.4
The answer to this is y= 5.
