<u>Given</u>:
The line graph shows the number of marks Stacey scored in her homeworks.
We need to determine the Stacey's mean score.
<u>Mean score:</u>
The total number of marks is given by

Simplifying, we get;

Thus, the total number of marks is 40.
Sum of the number of marks scored is given by

Thus, the sum of the marks scored is 20.
The mean is given by


Therefore, Stacey's mean score is 2 marks.
Answer:
y=3/2x+2.5
Step-by-step explanation:
<h3><em><u>The equation to find the number of hours for which the total cost will be the same for the two services is:</u></em></h3><h3>12 + 5h = 18 + 3h</h3>
<em><u>Solution:</u></em>
Let "h" be the number of hours
Given that,
<em><u>Derrick's Dog Sitting charges $12 plus $5 per hour</u></em>
Cost : 12 + 5(number of hours )
Cost : 12 + 5h ---------- eqn 1
<em><u>Darlene's Dog Sitting charges $18 plus $3 per hour</u></em>
Cost: 18 + 3(number of hours)
Cost: 18 + 3h ---------- eqn 1
<em><u>For eqn 1 = eqn 2, the number of hours for the total cost will be the same for the two services</u></em>
Therefore,
12 + 5h = 18 + 3h
Thus option A is correct
Angle G and Angle F are the same, which means that HF = GH
This means that x = 15
Answer:163.54$
Step-by-step explanation:
Given data
Volume of Storage(V)=
Length=2breadth
Let Length be L,Breadth be & height be H
therefore
10=LBH
Now substitutes the values
10=2
5=
Now cost for base is 
Cost for side walls is
Now total cost(C)=
C=20
+
+
C=20
+24BH+
C=
Now Differentiating With respect to Breadth to get minimum cost

![we\ get\ B=\sqrt[3]{4.5}=1.65m](https://tex.z-dn.net/?f=we%5C%20get%5C%20B%3D%5Csqrt%5B3%5D%7B4.5%7D%3D1.65m)


and mimimum cost C
