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Elan Coil [88]
3 years ago
9

Dr. George is ready to by a new iphone and has two different carriers he can go with. Cell 4 U can be represented by the functio

n c(x)=10x+75. Data House can be represented by the function c(x)=15x+50. X represents the amount of data used. Accessories will cost $135 Dr. George usually uses 4 gigs of data a month.
1. How much will the phone cost at Cell 4U?

2. How much will the phone cost at Data House?

3. Which company should Dr. George go with? Justify your answer.
Mathematics
1 answer:
Aleks04 [339]3 years ago
8 0
At Cell 4U it would cost $250 with accessories 
At Data House it would cost $245 with accessories.
He should buy a phone from Data house because it will be 5 dollars cheaper
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Step-by-step explanation:

{2}^{3}  \times  {2}^{2}

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8 0
3 years ago
Cost of a CD: $23.50<br> Markup: 63%<br> Discount: 50%
Vedmedyk [2.9K]
Alright this equation has two big steps. First we need to find the price after it was marked up, then we need to take that number and find the discounted price.
To find the cost after a percent of it was added, we just need to multiply the two together and add.
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Ok now that we have the number after the price increase, we now need to find the final answer after a discount of
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7 0
2 years ago
Please help me! I am struggling
AysviL [449]

Answer:

Oh man! I totally understand why you are struggling!

Step-by-step explanation:

You want the textbook or the cheat sheet?

Lets go with the cheat sheet.

So, notice the line segments, correct?

The way to find those is Pythagorean Theorem.

The squares of the legs of the triangle add up to the length of the hypotenuse squared. Imagine that the lengths of the sides ARE Hypotenuses. Then, form a triangle, with the legs (Other sides of the triangle except the hypotenuse) either vertically or horizontally(I explain it better below).

In other words, we need to create a right triangle with AB as the hypotenuse to use Pythagorean Theorem. How do we do that?

Count the number of units both vertically and horizontally from point A to B. Essentially, make a horizontal line segment starting at A, and stop it over B. Then, make a vertical line that goes down to B from that ending point (Remember to count the number of units along the way).

Those are your legs. Then, use those measurements in the Pythagorean Theorem:

12^{2} + 8^{2}=AB

I'm confident you can solve this! If you know mathematics...

Then, repeat for either AD or BC.

Then, use the formula for area of the Rectangle. How do we know that it is a rectangle? Well, I'm skipping this part because it will take too long to do, but I can explain it later if you want!

Oh, well.

Hope this helps! Stay Safe!  

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