Question

Help with #6 with work pls

Answer 1

Scale of model is 1 inch represent how many feet in real life
8inch=scale
30 feet=real
8:30=4:15=2:7.5=1:3.75
the one we can se taht matches is D
4 inches=15 feet
D


7. group and add like terms
sum means add btw
5x-2+x+8
5x+x-2+8
6x+6
A


6. D
7. A

Answer 2

D for number 6 and 7 is c