Find the circumfrence of a 42 cm circle

a. give an exact answer in terms of . (1 point)
b. use ≈ 22/7 , and express your answer as a fraction in lowest terms. (1 point)
3. a circle has a diameter of 20 inches.
a. give the exact answer for area in terms of . (1 point)
b. find an approximate area using ≈ 3.14. (1 point)
4. a circle has a radius of 5.5 inches.
a. give an exact answer for area in terms of . (1 point)
b. find an approximate area using ≈ 3.14. (1 point)
5. using the figure below, find the area of the circle using ∏≈ 22/7 (1 point)

the answer is d. (1.2, -4.7) on edgn

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option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.

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step-by-step explanation:

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this