7*8-6+5=55
6*5+7+8=45
5*7+8+6=49
I will continue in the comments
Hi there!
If we know the area is a square, we can use the formula for the area of a square to figure out what one side would be between. Knowing the value allows us to determine what it would be between. In this case, it is between 69 and 70.
WORK:
squareroot(4840) = 69.6
ANSWER:
Option B - 69 yd and 70 yd
<span>Part A:</span>
y = 30x + 13
y is the total cost
30 is the price per mattress
x is the number of mattress(es)
13 is the service
y = 28x + 15
y is the total cost
28 is the price per mattress
x is the number of mattress(es)
15 is the service charge
For Part B - replace the x's with 4 so for Company A
y = 30(4) + 13
30 * 4 = 120 + 13 = 133
Replace the x's with 4 so for Company B
y = 28(4) + 15
28 * 4 = 112 + 15 = 127
Company B charges less for the cleaning of 4 mattresses
Same thing for <span>Part C</span>, plug 7 into the x's
y = 30(7) + 13
30 x 7 = 210 + 13 = 223
y = 28(7) + 15
28 * 7 = 196 + 15 = 211
Since you are trying to find money saved from using the services of Company B to Company A, subtract total cost of 7 mattresses from Company A to Company B
233 - 211 = 22
<span>TLDR:</span>
Part A:
Company A: y = 30x + 13
Company B: y = 28x + 15
y = total cost
30 and 28 = price per mattress(es)
x = how many mattresses
13 and 15 = service charges
Part B:
Company A: y = 30(4) + 13 = 30 * 4 = 120 + 13 = 133
Company B: y = 28(4) + 15 = 28 * 4 = 112 + 15 = 127
Company B costs less for 4 mattresses
Plug 4 into x since you are trying to find the price of 4 mattresses
<span>Part C:
</span>Company A: y = 30(7) + 13 = 30 x 7 = 210 + 13 = 223
Company B: y = 28(7) + 15 = 28 * 7 = 196 + 15 = 211
233 - 211 = 22
Plug 7 into the x's because you're trying to find the price of 7 mattresses
Subtract Company B from Company A to find the cost of savings
The 0.7 gives the next height of each bounce
For example say first bounce was 7 ft then next bounce will be t*0.7 = 4.9 ft
Then next boune will be 7*(0.7)^2 and so on.
That is called the dependent variable. It depends upon the value of the independent variable.
f(x)=y
So we can see by inspection that the dependent variable y value depends upon the input value of the independent variable x
Any questions please feel free to ask. Thanks
