The length of a rectangle is 12 inches more than it's width what is it's width of the rectangle if the perimeter is 42 inches

4.5

Step-by-step explanation:

42-9=33              (9÷2=4.5)

33÷2=16.5

16.5-4.5=12

16.5+16.5+4.5+4.5=42

length=16.5

width=4.5

b) the dogs need to shift their focus to human scent.

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13