**Answer:**

6,251

**Step-by-step explanation:**

First you have to multiply 65 by 7 you will get 455

Then you have to multiply 144.9 by 40 you will get 5,796

At last add the two values:

5,796+455=6,251

**Answer:**

y=4x

**Step-by-step explanation:**

y=mx+b is our frame equation for a linear function.

b=the y intercept, or when the line crosses the y axis, whenever x=0, so in this chart it is (0,0), b=0

y=mx+0

m= the slope, to find m you can either use the slope formula or plug in a point and solve for m

8=m(2) + 0

m=4

we don't need to put 0 in our final answer because it doesn't change anything

**Answer:**

-1

**Step-by-step explanation:**

let,x=-1

f(x)= 12/4x + 2

f(-1)= 12/4x(-1) + 2

=12/(-4) +2

= -3+2

= -1

**Answer:**

Center: (4,8)

Radius: 2.5

Equation:

**Step-by-step explanation:**

It was given that; the endpoints of the longest chord on a circle are (4, 5.5) and (4, 10.5).

Note that the longest chord is the diameter;

The midpoint of the ends of the diameter gives us the center;

Use the midpoint formula;

The center is at;

To find the radius, use the distance formula to find the distance from the center to one of the endpoints.

The distance formula is;

The equation of the circle in standard form is given by;

We substitute the center and the radius into the formula to get;

**Answer:**

**Step-by-step explanation:**

Equation -

Solve - subtract 2 from both sides -