There were 84 people at the party who each had 1 cup of juice. How many quarts of juice were used at the party? (A 12 quarts B 43 quarts C 21 quarts or D 168 quarts (Gonna fail my test if I don't get this right)

C) 21 quarts

Step-by-step explanation:

Start off by taking the number of people (84) and multiply it by 1 cup of juice. You will receive 84 cups of juice. Each quart contains 4 cups. Divide 84 cups of juice by 4 cups. The end result is the number of quarts used at the party.

84 / 4 = 21

y = 5x + 17

step-by-step explanation:

a perpendicular line will be the opposite reciprocal slope of the given equation.   the slope given is -1/5 so the opposite reciprocal is 5

find b:

7 = 5 (-2) + b

7 = -10 + b

17 = b

write equation

y = 5x + 17

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540