Question

algebra

Answer 1

you need to set up a system of equations to represent this

take the first sentence:
3D + 3P = 9

now do the same for ther second purchase...

Answer 2

D = cost of drink (and he buys 4)
P = cost of pretzel (and he buys 2)

so the sum of 4 Drinks and 2 Pretzels = 8.5

make that into an equation like the one I wrote above

Answer 3

im lost

Answer 4

i still dont know the price of 1 pretzels

Answer 5

That's because there is more than 1 step to solving this

I cannot teach you all about equations.

The first step is to write the sentence as an equation:
so

the sum of 4 Drinks and 2 Pretzels = 8.5
make that into an equation like the one I wrote above (using D and P)


If you do this I will help furhter - if you just want th eanswer then wait

Answer 6

i dont know how to solve it ima wait

Answer 7

@MrNood

Answer 8

Look a\t my first answer - that shows you how to make an equation fromn th eFIRST sentencve.

I am asking you to do th esame from the SECOND sentence in the same way

However - I get the feeling oyu are not going to follow this through - there are a number more steps

Answer 9

d4 p2 =8.5

Answer 10

that?

Answer 11

that is not an equation

you need a PLUS sign in it

Answer 12

d4+p2=8.5

Answer 13

OK
Normally written as
4D + 2P =8.5

and I showed you that
3D + 3P = 9

so - do you know how to solve systems of wequations like this?

Answer 14

i never do it before

Answer 15

There are a number of ways - but I think th ebest way inb this case is 'elimination'

This is goint to take some care and time - are you going to stick with it?

Answer 16

yeah i think so

Answer 17

so we want to 'eliminate D' - that will give you an answer for P (which is th eprice of 1 pretzel)

so we need to get the SAME numer in front of D in both equations

look at the equations -
if oyu multiply the first by 3 then it will have 12D
if you multiply th esecond by 4 then it will have 12D

so start by multiplying BOTH side s of
4D + 2P =8.5
by 3

Answer 18

both side?

Answer 19

why this its so dofficult?