In an international school, 40% of the students are Asians, 90% of the remainder are Europeans and the rest are Americans. There are 56 more
Europeans than Asians. After some Asians left the school, 20% of the
remaining students were Asians. How many Asians are there left at the international school?

it is probably the graph on the bottom right.

c = 0.429t

step-by-step explanation:

the constant rate at which carlos harvests cassava is 35 minutes per 15 cassavas 15/35 = 0.429 cassava per minute

therefore, an equation that models the number of cassava (c) that harvest carlos in a time (t) is the following:

where t is the time in minutes.

this means that when 35 minutes have elapsed 15 cassava have been harvested, at 70 minutes 30 cassava have been harvested and so on.