Please help me, thank you

9514 1404 393

Step-by-step explanation:

1. We can rewrite the second equation to solve for z:

  z = x +3y -16

Then we can substitute the last equation for y:

  z = x +3(-4x +4) -16

  z = x -12x +12 -16

  z = -11x -4

The first equation tells us x = 0, so ...

  z = -11·0 -4

  z = -4

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2. Substituting the first equation into the second gives ...

  x -3(-5) = 13

  x + 15 = 13 . . . . simplify

  x = -2 . . . . . . . . subtract 15

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3. The first inequality eliminates the 2nd choice.

The last inequality eliminates the 3rd and 4th choices.

The 1st choice satisfies the 2nd inequality, so that is your

  3 ≥ 3·4 -5 . . . use (4, 3) in the second inequality

  3 ≥ 3 . . . . . true

  (x, y) = (4, 3) is a solution

i cant see the pictures can you re post them>

Step-by-step explanation:

part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

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step-by-step explanation: