Answer:
1) 8x - 9
2) 5x - 2
Step-by-step explanation:
1) Given 8 times the difference between a number x and 9.
This means we should have: [tex]$ 8(x - 9) $[/tex]
Now using the distributive property we distribute 8 to x and 9 like:
[tex]$ 8x - 72 $[/tex]. Thus the answer.
For 2) All the expressions except 4 equals [tex]$ 5x - 10 $[/tex]. The last option is [tex]$ 5x - 2 $[/tex]. Thus the answer.
