Question

can anyone help me

Answer 1

Raisins sell for $3.50 per pound, and granola sells for $5.90 per pound. Terri bought some raisins and some granola. The total weight was 2.1 pounds and cost $8.79.

Let r represent the number of pounds of raisins Terri purchased.

Which expression represents the number of pounds of granola she purchased?

A.
2.1 – r

B.
2.1r

C.
r + 2.1

D.
r – 2.1

Answer 2

@mathmale

Answer 3

@jdoe0001

Answer 4

hello

Answer 5

allo

Answer 6

do u know the answer

Answer 7

so... "r" is the amount of "raisins" Terri purchased
give it a number, any number... say.. .what would you use? 0.5, 1, 1.5 whatever, so pick a number

Answer 8

1.5

Answer 9

ok... 1.5 so.. let's supposed she bought 1.5 of raisins
total is 2.1lbs she bought

how many lbs of granola did she buy, if she bought 1.5 of raisins, off 2.1lbs total?

Answer 10

idk

Answer 11

alrite... let's put it this way
your mom say

ok, go to store and get me 2.1lbs of raisins and granola for breakfast
get me 1.5 lbs of raisins, and the rest will be granola

how much is the "rest"?

Answer 12

1.5

Answer 13

?

Answer 14

so you go back to your mom
and show her 1.5 of raisins, and 1.5 of granola
is that 2.1 of raisins and granola?

Answer 15

no

Answer 16

well... then I guess the "rest" is not 1.5lbs :)
if you're getting 1.5lbs of raisins
and your total needs to be 2.1lbs total
how much of granola can you buy?

recall, 2.1lbs total, but from that, 1.5lbs is raisins
so, how much of granola then?

Answer 17

.5?

Answer 18

if you go home with 1.5lbs of raisins and 1.5lbs of granola, your mom will say

wait a second here, 1.5 + 1.5 is 3.0 lbs but we only needed 2.1lbs

Answer 19

i don't get it

Answer 20

if your sister owes you $2.10 and she pays you $1.50, how much does she owe you still?

Answer 21

.60

Answer 22

ahahhh! how did you get 0.60 though? yes it's, but how did you get that?

Answer 23

2.10-1.50=0.60

Answer 24

can you plz tell me the answer i need to go

Answer 25

ahahh! you subtracted, subtraction = difference
to know the difference between two quantities, you simply "subtract" them :)

same with this case, if your mom needs only 1.5 of raisins and 2.1 total
2.1 - 1.5 = 0.6 so 0.6 of granola
because 1.5 + 0.6 = 2.1lbs

now, in the case above, we dunno the exact amount of raisins, we do know is \(\bf r\)
whatever "r" is
we also know that, the total of raisins and granola is 2.1lbs total

so the amount of granola is , "the difference from the total and the raisins"
2.1 - "whatever amount of raisins"
or
2.1 - "r"

Answer 26

wait so the answer is A

Answer 27

yeap

Answer 28

can u help me with a few more

Answer 29

sure, post anew, thus if I dunno, someone else may know :)