A medicine is applied to a burn on a patient's arm. The area of the burn in square centimeters decreases exponentially ad is shown in the graph.

A. What fraction of the burn area remains each week?

B. Write an equation representing the area of the burn ,a, after t weeks

C. what is the area of the burn after 7 weeks? round to three decimal places

54

step-by-step explanation:

option 2 is correct.

step-by-step explanation:

we are given two inequality equation

x+y> 5 and -3x+2y< -2

first we draw the graph of both function using t-table method

equation: x+y> 5

for x=0, y=5

for x=-5, y=0

table:

x   :   0     5

y   :   5     0

test point (0,0) , 0> 5

false

equation: -3x+2y< -2

for x=0, y=-1

for x=2, y=4

table:

x   :   0     2

y   : -1       4

test point (0,0) , 0< -2

true

now we draw the graph. see the attachment for graph.

common region would be solution set.

option 2 is correct.