Kamal's family is leaving for Merry Mountain Resort once his parents get home from work on Friday. Their house is 627 miles from the resort. They plan to stop and spend the night at a
hotel after 4 hours of driving, then complete the rest of the trip on the second day. Their
average speed is 60 miles per hour.
Which equation can you use to find how long, x, they will drive on the second day?
A. 60x + 4 = 627
B. 60(x + 4) = 627
C. 4x + 60 = 627
D. 4(x + 60) = 627

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6