Please simplify 6(–2y) – 9 + 4(–2y + 6) and include a step by step

Step-by-step explanation:

6(–2y) – 9 + 4(–2y + 6)               original equation

-12y - 9 + -8y +24                         simplify groups

-20y + 15                                      combine like terms

-20y+15

Step-by-step explanation:

distribute

= 6(-2y) + -9 + (4)(-2y) + (4)(6)

= -12y + -9 + -8y + 24

Combine like terms

= -12y + -9 + -8y + 24

=(-12y + -8y) + (-9+24)

= -20y + 15

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,