This is very important, please help mee :)

X

Step-by-step explanation:

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f(-1) = 3

Step-by-step explanation:

f(-1) means the value of y at x = -1.

So what's the value of y at x = 1?

First, focus on the graph and look at x = -1.

Next, see which y-value does graph pass through when x = -1.

Looks like the graph passes y = 3 when x = -1

Thus, f(-1) = 3

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70