6. Choose the equation for the problem. A contractor calculated his fee as $50 plus $25/hour. How many hours did he work if his bill was $300?
50 +25
= 300
50(25h) = 300
50
25h
300
50 + 25h = 300

Pls! does anybody know a shortcut for answering these types of questions in the future?

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?