Answer:
x = 18
Step-by-step explanation:
total money = money spent + money left
x = 7+11
x = 18
7/10 is equivalent to 3.5/5 is one
it is 12
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given: 
Initial value: y(1)=6
Let 

Variable separable

Integrate both sides


Initial condition, y(1)=6


Put C into equation
Solution:

or



Hence, The solution is
or 