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The graph below shows Alisha's height above ground as she walks up the stairs.
Alisha's Walk
Height (floors)
chools
Time (min)
Marcus is walking at the same rate as Alisha. After 12 minutes he is on the ninth floor. Which
equation can be used to find y, the height above ground in floors for Marcus at x minutes?
А
-
B
y-1-}x-12)
v-9-(x-12)
cy-12 = {(x+9)
y+9 =(x-12)
D
Find the slope first, then use the "After 12 minutes he is on the ninth floor" for your "X" & "y" input.

29 mil

step-by-step explanation:

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:

boxplot

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).