I need help on Number 3

C

Step-by-step explanation:

x-int is when y=0

when f(x)=0, x=0,-3

A. 0= -x(x-3)

    x=0, +3.   NOT IT

B. 0= x+(x+3)

    2x=-3

    x=-3/2. NOT IT

C. 0=x(x+3)

    x=0, -3.  YE

D. 0= -x(x+3)

    x=0, -3.  YE

Since 0 cannot be neither positive nor negative, both C and D fulfill the first requirement.

but 2nd requirement= f(-1)=-2

C. f(-1)=-1(-1+3)=-1*2=-2 VOILA!!!

C. is the ans.

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

i believe the answer is 323 ft

step-by-step explanation: