Please could I get help. Thank you.

462 cm²

Step-by-step explanation:

Area of larger rectangle:

=> 42*21

=> 882 cm²

Area of smaller rectangle:

=> 28*15

=> 420 cm²

Area of shaded region:

=> 882-420

=> 462 cm²

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )

answer: 12x^2+6x

step-by-step explanation:

6x does not equal 24x. hope it works!