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6 February, 01:22

1. What is the solution to the system of equations?

y = 5x - 7

-3x - 2y = - 12

A. (2, 3)

B. (1, - 2)

C. (-2, 9)

D. (3, 8)

What is the solution to the systems of equations represented by the 2 equations?

y = 4x + 3

y = - x - 2

A. (1, 7)

B. (-1, - 1)

C. (2, - 4)

D. (-3, - 9)

A family went to an amusement park and paid $12 for each adult and $8 for each child. A group of 15 people went to the park and it cost $140. This system of equations models this situation, where x is the number of adults and y is the number of children.

How many children were in the group?

x + y = 15

12x + 8y = 140

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Answers (1)
  1. 6 February, 01:35
    0
    Y=5x-7 - 3x-2y=-12 (2,3)

    y=4x+3 y=-x-2 (-1,-1)

    12x+8y=140 5 adults 10 children

    12 (5) + 8 (10) = 140

    60+80=140
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