Answer:
Step-by-step explanation:
2n+5=35
2n=35-5
2n=30
n=15
Answered by

You would set it up: .5/100 = x/490 and then cross multiply .5 time 490 and 100 times x, and end up with: 245=100x. divide by 100, and get 2.45
Collect like terms
-3w - 7 w =5
Divide both sides by -10
-10w =5
w = -1/2
The correct answer is (-3,1)