2. a. given two sets s = {w, x, y, z} and t = {%,^,* and a function : s → t defined as follows: f(w) = %, f(x) =^, f(y) = *, f(z) = %. determine if f is one-to-one and onto. [2 marks) find f - if it exists; otherwise give a reason why it does not exist. [1 mark] b. derive a formula for the sum of the first positive odd integers, [3 marks)

On a architect's drawing of a house, 1 inche representa 1.5

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap