How do i do this question f(x)=-x^2+5

The parent function is f(x)=x^2

Your function has been shifted from that equation.

The parabola is facing downward and is shifted up 5 units on the y axis.

option a is correct.

the circumference of a circle is, 94.2 centimeters

step-by-step explanation:

circumference of a circle can be found by multiplying by the diameter of the circle.

i.e, where

c is the circumference of a circle

d represents the diameter of a circle

and use value of

given: the diameter of a circle = 30 centimeters.

using circumference formula, we have

substitute the given value of d = 30 cm we have;

therefore the circumference of a circle is, 94.2 centimeters