3x + 2x - x = 4x so just make something that is equal to 4x also. Like 5x - x.
Answer:
12
Step-by-step explanation:
12 times 3= 36
12 times 4= 48
36 plus 48
hope this helps
Answer:
Option a is the correct choice.
Step-by-step explanation:
Let n be number of hours studied by Nikki.
We are told that Cindy studied seven more hours than Nikki studied. This means that number of hours studied by Nikki plus 7 hours equals to the number of hours studied by Cindy.
We can represent this information in an expression as :

We can see from our given choices that expression given in option a represents the number of hours studied by Cindy in terms of hours studied by Nikki.
Therefore, option a is the correct choice.
Answer: b. graphing
Step-by-step explanation:
Answer:
B. It is too risky to use credit cards online, and online payment services have better security because of the increasing number of hackers that may steal money from your bank account.
Step-by-step explanation: