Answer:
5(2x-7)
Step-by-step explanation:
Answer:
230,300 different selections.
Step-by-step explanation:
If the order does not matter, the number of possible different selections is determined as the combination of choosing four numbers out of 50:

There are 230,300 possible different selections.
Answer:
3c-9d+7c+5d becomes this when it is simplified 10c - 4d
Step-by-step explanation:
Answer: d
Step-by-step explanation:
its d