Your Last hamreprow di Pion
A-D
A toll collector on a highway receives 53 for cars and $4 for buses. At the end of a 1-hour period, she collected
$60. How many cars and buses passed through the toll booth during that period? List all possible solutions.
two cars, 360 kilometers apart, begin driving toward each other on a long, straight highway. One car travels 80 km
A toll collector on a highway receives $3 for cars and $4 for busses. At the end of a 1 hour period she collected $60. How many cars and busses passed through the toll booth during that period? List all possible solutions

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?

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

hope i could someone! : )