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anonymous
 one year ago
You throw a ball straight up from a rooftop. The ball misses the rooftop on its way down and eventually strikes the ground. A mathematical model can be used to describe the relationship for the ball's height above the ground, y, after x seconds. Consider the following data:
anonymous
 one year ago
You throw a ball straight up from a rooftop. The ball misses the rooftop on its way down and eventually strikes the ground. A mathematical model can be used to describe the relationship for the ball's height above the ground, y, after x seconds. Consider the following data:

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0D. y = 16x2 + 80x + 50

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@JoannaBlackwelder your gonna earn a ton of medals today lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for this my answer was d but i wasnt sure if it was right

JoannaBlackwelder
 one year ago
Best ResponseYou've already chosen the best response.1Haha, looks like I may be getting a bunch of medals. :) But I don't think that equation models all of the data.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so d is not right or what

JoannaBlackwelder
 one year ago
Best ResponseYou've already chosen the best response.1No, that model doesn't fit the data.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hold on ill explain what i did

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the one thing I do notice is that since this is parabolic, everything will be symmetric about the vertex. Now the vertex is b/2a. Now I also notice that 1 and 4 have the same value, which means the vertex HAS to be in between 1 and 4. The middle of 1 and 4 is 2.5. So what this means is that b/2a has to equal 2.5. Only two of your answers meet that condition, a and d.Now between a and d, you would just need to plug in values. f(1) should equal 114. Looks like they do for a and d. Now to check f(2). Looks like only d works for f(2) so the answer is d

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0does that make since

JoannaBlackwelder
 one year ago
Best ResponseYou've already chosen the best response.1Yeah, your statement makes sense, except that I don't get f(2) to be 146.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0why whats confusing you

JoannaBlackwelder
 one year ago
Best ResponseYou've already chosen the best response.1Oh, you're right! I made a typo. :) That function does match the data!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok thnx i just wanted to make sure my work waqs good

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0on to your next metal lol

JoannaBlackwelder
 one year ago
Best ResponseYou've already chosen the best response.1Yep, no worries :)
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