Question

3. Masani is testing 25 g of fertilizer. She of the plans to give each test plant 0.4 g fertilizer and have 8 g left over for future tests. Solve the equation 0.4n+ 8 = 25 to find the number of plants Masani car use in her ​

Answer 1

Explanation:

So, you have to isolate the variable. Think of it as finding how many plants she gave fertilizer to. 0.4n+8=25, when moving the 8 to the other side, it becomes negative. 0.4n=25-8. 0.4n=17. You then find the variable n. think of it as dividing 17 by 0.4 or multiplying n a certain number of times to find the number of plants.17/0.4 is 42.5. therefore, she gave 42 plants fertilizer, depending on what your teacher wanted to count. If she says round down, 42. If she wants to round up, 43. If she wants to be specific, 42.5. I would personally put the decimal.