Gregor is documenting the height of pea plants each week. He has determined the function to be f(x) = 2x + 1.

Based on the situation above, describe any necessary restrictions to the domain and range. Provide justification for the restrictions.

Question

Gregor is documenting the height of pea plants each week. He has determined the function to be f(x) = 2x + 1.

Based on the situation above, describe any necessary restrictions to the domain and range. Provide justification for the restrictions.

anonymous · Answer

x represents weeks and f(x) represents height.  what restrictions can you think of for the domain?  i.e., can weeks be negative?

anonymous · Answer

They couldn't be negative unless you were looking backwards.. But I guess the domain would be that the pea plant can't grow backwards right?

anonymous · Answer

i agree.  the domain should be nonnegative, and so should the range