Let x = the number of pounds of cherries purchased and y = the number of pounds of grapes purchased.
The first two sentences yield the inequalities:
2x + .5y ≤ 3 and
x + y ≥ 2.
You also must have x ≥ 0 and y ≥ 0, in order for this to make sense.
When you graph these four inequalities, you will obtain a region in the first quadrant. I will let you try to find it by graphing the first two inequalities and determining the shaded region.
If you need more help after this, please post a reply and I may offer more assistance.