An adult with the flu has a temperature of 103.0 ∘f.
express your answer as an integer.

a brain contains 1.10×10^10 neurons.
express your answer as an integer.

the time for a nerve impulse to travel from the feet to the brain is 0.46 s.
express your answer as an integer.

A integer is a whole number.

For example 3

45

3001

694

2307

Integer will not be a fraction like 1.25

2.345

6.7890

2.222

Integer can be negative or zero or positive  

For example  

-24

-5067

0

+35

+4567

So the Answers are  

An adult with the flu has a temperature of

A brain contains neurons (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 10 to 8)

The time for a nerve impulse to travel from the feet to the brain is s. (moving the decimal point to the right side power of 10 increases........here decimal point is moved to two places to the right side so power of 10 decreases from 0 to -2)

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)