Its C
hello, dark and cruel world...
Answer: 35
Step-by-step explanation:
The formula to find this is number of terms/2(first term+last term)
So, we have 7 terms, our first is -4 and our last is 14
7/2(-4+14)=35
Answer: 
Step-by-step explanation:
1. To write the number given in the problem (4,498,000,000) in scientific notation you must write it in the following form:

2. The decimal point must be written after the first digit and the exponent b must be positive and indicates the number of times the decimal point is move to the right. Therefore, you have:

You just have to reverse the operations
1. -48-8= -56
2. -56/3= -18.66
ANSWER = -18.66