Answer:
Lucia is able to plant 1,870 rose bushes in her garden.
Explanation:
We know that Lucia's garden has a trapezoid form, where its bases are 50 and 35 meters each and its height is 22 meters.
The area of a trapezoid is defined as
Where
,
and
. Replacing these values, we have
Therefore, the area of the garden is 935 square meters.
Now, if Lucia plants two rose bushes per each square meter, then 935 square meters would be equivalent to
Therefore, Lucia is able to plant 1,870 rose bushes in her garden.