Linear because y= 1 - x makes a straight line
Answer:
9/16
Step-by-step explanation:
Since it is only 2 sets of 4 coices it would be super easy to write them all out.
Plant 1 Clay
Plant 1 Plastic
Plant 1 Metal
Plant 1 Wood
Plant 2 Clay
Plant 2 Plastic
Plant 2 Metal
Plant 2 Wood
Plant 3 Clay
Plant 3 Plastic
Plant 3 Metal
Plant 3 Wood
Cactus Clay
Cactus Plastic
Cactus Metal
Cactus Wood
16 choics total, take out all with a cactus or clay pot
Plant 1 Plastic
Plant 1 Metal
Plant 1 Wood
Plant 2 Plastic
Plant 2 Metal
Plant 2 Wood
Plant 3 Plastic
Plant 3 Metal
Plant 3 Wood
9 choices left, so probability is 9/16
to do it for any number find the total number of choices again, so 16 then you subtract the number of each category you are excluding. so there were 4 cacti and 4 clay, so subtract 8, to get 8. Then you add back any that had both clay and cacti, which there was one, whn you had a cactus in a clay pot, so add back 1. This gets us 9 again.
This is called the inclusion exclusion principle. Might want to look into this specifically.
So,
"at least" means that is the minimum acceptable amount. So we will use the "greater than or equal to" symbol.
Let "w" represent the width of the traffic lane.
w ≥ 12 ft.
Instructions? "Find the number."
12 + 5n = 9n
12 = 4n and so n = 3 (answer)