What is the exact area of the circle having radius 7in

A = 49pi in^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

The radius is 7

A = pi 7^2

A = 49pi in^2

We do not approximate pi since we are asked for the exact answer

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

cosine

step-by-step explanation: