This is all i ask for just one ☝️ simple favor

10)

f(-1) = 2x - 1

f(-1) = 2.(-1) - 1

f(-1) = -2 - 1

f(-1) = -3

f(-4) = x - 1

f(-4) = -4 - 1

f(-4) = -5

11)

f(-4) = x

f(-4) = -4

f(0) = -x + 4

f(0) = -0 + 4

f(0) = 4

12)

f(-4) = 5

f(8) = -2x + 10

f(8) = -2.8 + 10

f(8) = -16 + 10

f(8) = -6

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4