Adam has 3 plants in his room. He measures how much each plant has grown. The first plant is 3/12 of a foot tall, the second plant is 8/12 of a foot tall, and the third plant is 4/12 of a foot tall. Which model can be used to find how tall the plants are altogether?

step-by-step explanation:

options

c

step-by-step explanation:

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?