Answer:
An elevator
Step-by-step explanation:
I think this is right because a stem transports nutrients throughout the plant
I hope this helps :)
Let us convert the percentages to decimal format first.. so 5% is just 5/100 or 0.05 and 15% is just 15/100 or 0.15
so hmmm, so, let's say it needs "x" amount and "y" amount of each respectively, so, whatever "x" and "y" are, they must add up to 100, and whatever their concentration is, must add up to what the mixture yields
thus

solve for "x"
what's "y"? well, y = 100 - x
Yes, -0.5 is an integer because it is a negative number. Any number that is positive or negative is an integer.