I'm not 100% positive but i think its Jamal and Steve.
1. 
2. 
3. 
4. (1st option) Yes; the number is written in scientific notation.
Answer:
9
Step-by-step explanation:
hello

hope this helps
Let’s start with the easy part: half of the base is 3.
Therefore, 3 x h + 1 = 18
3 x h = 3h and 3 x 1 = 3
3h + 3 = 18
To solve these equations, you have to do the inverse. First you would need to minus 3:
3h = 15
3h is a simpler way of saying 3 x h, so the inverse would be a divide.
h = 5
Instead of it being a square root, it becomes a cube root sign. So find the cube root of whatever number is inside the sign.