Let x be the original cost for the sofa.
X x (1 + 0.07) =3210
X = 3000
Now we know the cost for the sofa.
Let p be the profit percent.
3000 x (1 + p) = 3360
P = 0.12
So the percentage profit is 12%
Answer:
Step-by-step explanation:

Using the quadratic formula:

Since the discriminant is negative, -31, there are no real roots
Hello!
You can expand the 4
4x + 8
the answer is 4x + 8
Hope this helps!
Answer:
(y - 7)
Step-by-step explanation:
"7 less than y" means just that.... that you have 7 fewer units then the value of y.
D. 35 is the answer. Since we know that 14=2k based on the knowledge given in the first part of the equation, we can solve for K. We learn that K=7. Then, we can substitute K into the second equation: y=(7)(5) which is 35.