Devi pays $10.60 for 4 cheeseburgers and 3 cups of drink. Amirah pays $3.10 for a cheeseburger and
1
cup of drink. Find the cost of each item.

help me on these please​

Cost of Drink is $1.8

Cost of Cheeseburger is $1.3

Explanation:

Let Cups of drink be x

Let Cheeseburgers be y

3x+4y= 10.6 > (i)

x+y=3.1 > (ii)

Now you can use either substitution method or elimination method. Up to you because the question hasn't specified. I am using substitution method.

(ii)> x=3.1-y Put in (i)

3(3.1-y)+4y=10.6

9.3-3y+4y=10.6

y=10.6-9.3

y=1.3 Put in (ii)

x=3.1-y

x=3.1-1.3

x=1.8

answer

explanation

the given equation is

we can rewrite this as:

let

then the equation becomes:

the factors of 8 that sum up to -9 are {-1,-8}

we split the middle term with these factors to obtain,

we factor by grouping to obtain:

apply the zero product property to get:

but

explanation:

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