Answer:
Hello!!! Princess Sakura here ^^
Step-by-step explanation:
When you combine like terms you see the ones that are similar then you add or subtract, depends on what the signs are. For this one -7x is similar to x so in this case you would add x to the -7x which will give you -6x.
There are 116,280 ways to select the officers.
Since order is important, we use permutations:
It would be an approximate answer because you don’t know how long it would actually take to do that task
It would be $140, because if it was marked up 50% of $140 that would be $70 + $140 =210 and if it's marked down 50% it would my half $210 and that would be $140.
