16x-15-9x=13
7x-15=13
+15 +15
x=4
Answer:
200 divided by 50= 4 so 4 months
Step-by-step explanation:
B= y-intercept
b= 4
m= slope
m= 1/2
y=1/2x+4
So firstly, you want to foil - (7v^4 + 6) [Think of the minus sign as -1]: 
Next, combine like terms and your answer will be: 