Ascuba diver dives down 22 ft . he then turns around and swims up 11 feet before diving one final dive and going down 13 ft . how far down did the diver ?

Which of the following parabolas opens down?

Which strategy is used by public health to reduce the incidence of food poisoning?

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!