Here is an expression. 4 1/2 / 1/4
Which situation can be modeled using this expression?
A. Kim has 4 cups of flour. She uses cup of flour for a recipe. How many cups of flour does
Kim have remaining?
B. Alex has 4 pages to read for homework. So far, he has finished
many pages has Alex read so far?
of his homework. How
C. Ben has a 4-foot-long sandwich. He cuts the sandwich into
pieces of sandwich does Ben have?
-foot-long pieces. How many
D. Stacy has 4 hours to get ready for a concert. She spends
hours does Stacy have remaining to get ready?
hour showering. How many

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:

4 puzzles in 3 hours

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

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step-by-step explanation: