Explain your answer !

( WILL GIVE BRAINLST)

The bottle of juice is $1

Step-by-step explanation:

It is one dollar because if you break down the fact that if you get an apple and a bottle of juice and you have to pay $3 then it's fairly easy to figure out that the only solution is that the apples cost $2 each so if you get three apples and one juice then you subtract 6 from 7 and you get $1

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

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step-by-step explanation: