How I can start making these computational problems?

I do not know where to start in one of these. I have trouble with word problems (1) A balloon is steadily increasing to 5 ft / s. A 15-foot bike / s. When the child is directly under the ball, the ball is 45 feet above it. How fast is the distance between the child and the ball over three seconds later? 2) Candyland's population was 75,000 in 1960. Number increased to 105,000 in 1985. Assuming exponential growth, which is the population of Candy Land in 2010. 3) determine ^ F (2009) (x), where F (x) = sin ^ 4 (x) cos ^ 4 + (x)

the first, has two types of ... y = 45 y = 5t 45 = 5 (t 9), if we want to if they are t = 0 other than x = 15 t and do not require constant added because our position is x 0 for t = 0 by our earlier hypothesis now takes a hypotenuse of the triangle equation where D is the distance between them and is in the Pythagorean theorem c = sqrt (x ^ 2 + y ^ 2) replacement in our equations for xy positions and from the beginning = sqrt (25 ^ 2 225T (T 18 ^ 81)) 2 t = sqrt terms of group (250t ^ 2 81 t 18) take derivative of this function now ... not pretty .. but at least it is fairly easy, you get 15.81 (t + 0.036) / (t ^ 2 + 0.072 + 0.324 t) ^ 0.5 Connect 3 for T and we get 15.54 m / s # 2 is somewhat ambiguous in its definition of exponential growth ... is needed a different set of growth rates, or make assumptions ... then ... we use the exponential growth formula x (t) = a * b ^ (t / r) = b = 75 30/75 =. 4 to connect to t = 25 to determine R *. 105 = 75 4 ^ (25 / r) =- r now connect to T 68.08071 = 50 75 * (.4) ^ (50/-68.08071) = 147,000 people in 2010 (regularly) The third I have to see the real problem, the syntax does not seem correct. If correct, as stated, means that you want to increase the entire function of 2009x which means it can not determine the real value .. if that means you want to find F (2009) and then need to know if x is in degrees or radians (British Columbia, 0.6404 0.9953 obtains or intends F (2009) then it's as degrees or radians degrees =-. Radians =. 0156869 00336487

Dynazty - Lights Out In Candyland (live at Mosebacke, Sweden)

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