Please help asap, thank you!!

Which percentage, when multiplied by the number that is calculated by subtracting a person's age by 220, determines target heart rate?

40

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70

Use the list of barriers and media messages you identified to select three possible educational campaigns you could develop in order to members of your community avoid or overcome those barriers. possible campaigns might focus on avoidance of underage drinking or teen substance abuse, prevention of driving under the influence, teen driving safety, validating or refuting perceptions of norms regarding drug use, or promoting a drug or teen court advocacy program in your community make sure your campaign uses technological resources, such as graphic design, word processing, or web page design software.