( -3+71i )+(9)=

express your answer in the form ( a + bi )

6 + 71i

Step-by-step explanation:

-3 + 71i + 9

combine like terms

6 + 71i

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).