Question

Find the product.
1.(2x)(10x)
A:20x
B:12x
C:20x² ***
D:5x

2.-3m(m+8)
A:-3m²+24
B:-3m²-24m
C:-24m² ***
D:-4m+5

3.4d(2d-9)
A:8d-36d ***
B:-d
C:-28d²
D:8d²-36d

4.Find the area of the rectangle.
7x+1
________________
| |
| |
| | 8x
|________________|
A:15x+1
B:56x²+8x
C:56x+8
D:15x²+9x ***

5.find the product.
5b(6b-10)
A:11b-10
B:5b²+6b-10
C:-b-10
D:30b²-50b***

Please correct me if I'm wrong on something.

Answer 1

number 2, 3, and 4 is wrong.

Answer 2

on number 2 take -3m(m+8)=-3m^2-24m

Answer 3

number 3, is 4d*2d=8d^2

Answer 4

and number 4, is 7*8=56

Answer 5

Number 2 is b

Answer 6

thank you so much. @16shuston and @KennediSpencer927