at 1 pm the family resumes their trip and they reach helena at 5 pm the total distance from the family's home to helena is 485 miles include the 30 minute lunch stop what is the average speed over the entire trip?

many reason,

step-by-step explanation:

56 44 2 4

step-by-step explanation:

if y=4x then you will substitute 4x in for y in the second equation.

8x + 4x = 18 combine like terms

12x = 18 divide by 12 on both sides

x = 18/12 or 3/2

now replace x in the first equation with 3/2 to get

y = 4 3/2

y = 6

the answer is a

(3/2,6)

hope that .

brainliest is always apprectiated

the correct answer is the last option