Answer:
75.86 %
Step-by-step explanation:

75.86 %
Answer: 
Step-by-step explanation:
For this exercise it is important to remember that:
1. The word "difference" indicates subtraction (The result of a subtraction is called "difference").
2. The multiplication of signs:

For this case, according to the data given in the exercise, the records high temperature and the record low temperature are:

Therefore, if you want to find the difference in the record temperatures, you need to sutract them.
Then you get the following result:
First, we add 25w on both sides to give us a positive expression for w:

Next, minus 200 from both sides to isolate the expression for w:

Now we divide by 25 on both sides to obtain the inequality for w:

So
Answer:
B. f(-5) = -70
Step-by-step explanation:
f(-5)= 10(-5) - 20
f(-5) = -50 - 20
f(-5) = -70
1)combine like terms
2) move 9 to the other side by subtracting 9
3) divide by the # that is in front of y - to both sides
answer you should get: -11/2