Question

2 cups ofcoffee and 5 bottles of water cost $12

7 cups of coffe and 4 bottles of water cost $15
use c to represent the cost of a cup of coffe and w to represent the cost of a bottle of water

Answer 1

w=2$
c=1$

2c+5w=12
7c+4w=15

9c+9w=27
9(c+w)=27
c+w=3

c=3-w
2(3-w)+5w=12
3w=6
w=2$

2c+10=12
c=1$

Answer 2

Answer:They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels

Explanation: