The height of a tree is given by the equation y=20+5x where y is its height in cm and x is the number of weeks after the tree is planted. (a) Find the height of tree after 3 weeks and 5 weeks.

(b) What does y-intercept represent?

49xy +34y - 72z. determine the degree of the polynomial

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What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio