Someone please help, 5500 trees were planted in a forest on 1st october 2018. only 5060 of these trees were still alive on 1st october 2019. it is assumed that the number of trees still alive is given by n=ar^t where N is the number of tree still alive T years after 1st October 2018.
Write down the value of a
Work out the value of r
Work out the predicted percentage decrease in trees still alive between 1st October 2018 and 1st October 2030

yes

step-by-step explanation:

answer: 72: 111

step-by-step explanation:

no

step-by-step explanation:

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4