Answer:
Step-by-step explanation:
<u>3 hours for studying x subjects:</u>
The answer is x-1 hope that helps not sure if it does
Answer:

Step-by-step explanation:
The first thing that would need to be done is solving for y. This problem has already done this. The next step is to exchange y for 
That is all. This would mean that the function notation for the equation would be: 
4 + 2h < -3
2h < -7
h < -3.5
x ∈ (-∞, -3.5)
Answer:
23
Step-by-step explanation:
Remember PEMDAS/order of operations (Parentheses, exponent, multiplication, division, addition, subtraction)
10*1/2+(-6)(-3)
10*1/2+18
5+18
23