For 9 pounds of trail mix and 7 pounds of jelly beans, the total is $51 for 3 pounds of trail mix and 5 pounds of jelly beans, the total cost is $27 find the total cost for each pound of trail mix and each pound of jelly beans

Trail Mix is $2.75 per pound while Jelly beans are $3.75 per pound

Step-by-step explanation:

9x+7y=51

3x+57=27

multiplied 2nd equation by -3

9x+7y=51

-9x-15y=-81

cancel out

-18y=-30

y=3.75

substitute back in

9x+7(3.75)=51

solve

x=2.75

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answer:

(-8,7)

explanation:

we know that  

f

(

−

3

)

=

7

therefore, if we wish to get the output as 7, in the function, we need to have our input to be -3.

looking at the function  

f

(

x

+

5

)

, what should the value of x be, such that the input in the function becomes 7?

we simply equate the terms,

x

+

5

=

−

3

x

=

−

8

thus, the point on the new function would be  

(

−

8

,

7

)