An aspiring engineer wants to build a timer by taking a glass cylinder, filling it with water, suspending it in the air, and cutting a small hole in the bottom. he notes that at 1 p. m., the cylinder is 80% full, and at 2 p. m., it is 65% full. draw a graph expressing this and interpret the meaning of the y-intercept.

y axis denotes the level of water in cylinder

x axis denotes the time

Step-by-step explanation:

Given : At 1 p.m. cylinder is 80% full i.e. 0.80.

           At 2 p.m. cylinder is 65% full i.e. 0.65.

Solution :

time(x) :        1                    2

level (y) :      0.80            0.65

Using these points we can plot the graph (refer the attached figure)

In the figure y axis denotes the level of water in cylinder

x axis denotes the time

We can also find the equation of the graph by using two point slope form :

 ---a

Where m is the slope

Since  

Thus  slope (m) =

Now putting values in equation a

Thus the required equation of the situation or the graph is

THE GRAPH IS ATTACHED AND Y INTERCEPT DENOTES THE LEVEL OF WATER

about 168 miles

step-by-step explanation:

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2