First divide by 4 to get x^2=9. Then take the square root of both sides. x=3 and x = -3.
The answer is D. Group =2
Answer:
The answer is x=9 so, its option 3.
Lets use x as the number of CD's that she will buy in a month. So knowing that, our inequality can look like this. 7 + 10x < or = 100. Why? because we will have to multiply 10 with the number of CDs she will purchase in a month to get the total she spends. Hence 10 times x. She also has to add a 7 membership fee per month to this. Also, she has to remember that what she paid has to be less or equal to 100 because the problem states that she spends no more than 100 a month.
