Answer: 
Step-by-step explanation:
Given
The temperature on Monday was 
By Tuesday, it becomes 
Change in temperature is the difference between the two temperatures.

Therefore, the change in temperature is
.
Answer:
A) POSITIVE
Step-by-step explanation:
45 +(-38)
Will become
45-38
= 7
The answer is A. true, since the order of operations goes as follows:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
One way I was taught to remember it was by creating a saying out of the first letters(PEMDAS=Please Excuse My Dear Aunt Sally).