This graph relates the radii of circles to their approximate circumferences.

Radii and Circumferences of Circles
On a coordinate plane, the x-axis is labeled Radius (in centimeters) and the y-axis is labeled Circumference (in centimeters). A line goes through points (0, 0), (1, 6.28) and (2, 12.56).

According to the graph, which must be true?
When the circumference is approximately 4 cm, the radius is 25.12 cm.
When the radius is 5 cm, the circumference is approximately 28.26 cm.
When the circumference is approximately 5 cm, the radius is 28.26 cm.
When the radius is 4 cm, the circumference is approximately 25.12 cm.

When the radius is 4 cm, the circumference is approximately 25.12 cm.

Step-by-step explanation:

We see a multiple pattern of  y = ( 5.28 (x1) + 1 )  

when x =  1 we (x1) +1

When x = 2 we (x2)+2

when x = 3 we (x3)+3

when x = 4 we (x4) : y = (5.28 x4) + 4 = 25.12

828. all there is to it!

here, if you ever need with rounding (or other forms of arithmetic/math) again, use this:

thats the rounding one, but if you just click the top left, it shows you all the calculators you may need!

the quotient is 4x^2 - 27x + 167 with a remainder of -996

step-by-step explanation:

in synthetic division, use -6 as the divisor and use the coefficients {4, -3, 5, 6}:

-6     )   4     -3     5     6

                -24   162 -1002

          4   -27   167   -996

thus, the quotient is 4x^2 - 27x + 167 with a remainder of -996.

note:   your "4x°-3x+5x+6" is ambiguous / incomplete.   i had to assume that you meant '4x^3 - 3x^2 + 5x + 6."