Explain how to calculate the percent of change.

1 answer:

3 0

<span>work out the difference (increase) between the two numbers you are comparing.Increase = New Number - Original Number.Then: divide the increase by the original number and multiply the answer by 100.% increase = Increase ÷ Original Number × 100.</span>

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Twelve members of a band purchase one beverage each during a break at practice. Exactly 5 of the 12 members bought bottled water

Hoochie [10]

Answer:

Step-by-step explanation:

You have to use ratios. If 5 of 12 members bought water, then x of 168 members will buy water.

$\frac{5}{12} = \frac{x}{168}\\12x = 840\\x = 70$

70 members will buy bottled water.

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2 years ago

Which of the following equations best describes a square root function that is reflected across the x-axis and has a vertex of (

Minchanka [31]

Answer:

Step-by-step explanation:

Rather than picking, let's try to construct one from the description.

reflected over the x axis means - $\sqrt{x}$

the vertex is usually at (0,0), now how do we move a graph? or in other words translating it.

To move left and right you use $\sqrt{x-h}$ where if you subtract h you move right and if you add h you move left. we go from (0,0) to (-4,2). so 0 to -4 is 4 left, so that means we add 4.

To move up and down we use $\sqrt{x}+v$ Here if v is positive you move up and if v is negative you move down. going from (0,0) to (-4,2) it moves up 2