The graph shows the price of a fishing license for the current season as a function of the number of days since the license went on sale. What is
the slope of the line? What is its meaning in context?
a) the fishing license is available for sale one day of the season.
b)the price of the license does not change during the season.
c)undefined; the fishing license is available for sale one day of the season.
d) undefined, the price of the license does not change during the season.

correct answer:

b.(19,-2)

you are playing an adventure game on your computer. you come across a troll who won't let you pass and there is no other way to get to the other side of the river except over the bridge he is guarding.

the troll is a nerd. he takes great delight in watching people struggle with his problems. very few get them. he only gives you one chance and then he changes the puzzle. you have to solve this one.

before you are four blocks. they are numbered 11,6, -7,21.

he tells that the answer he wants is minus and between -1 and - 2. you can use +, -, ×, ÷   ( and ) as many times as you like or no times at all. you don't like the way he's looking at you, but you need to cross the bridge. what do you do?