Answer:
13
Step-by-step explanation:
Multiply 130 by .10, To Multiply a number by a percent you have to move the decimal two places to the left.
Im pretty sure its -y^2+3y+13x-3
8x + 5 = 3x + 15
8x - 3x = 15 - 5 (put same kinds of number on one side and change the signs)
5x = 10 (simplify)
5x/5 = 10/5 (simplify)
x = 2 (answer)
hope this helps