Answer:
1150
Step-by-step explanation:
First how many subscribers does he have? 200+ (40-10=30)=230
230*5=1150
<h3>
Answer: $611</h3>
Work Shown:
30% of 470 = 0.30*470 = 141
The value goes up by $141, so the answer would be 470+141 = $611
A slight shortcut would be to say
1.30*470 = 611
This works because 1.30 = 1 + 0.30 = 100% + 30%