Using the sum (addition) and two 2-digit addends, 12 + 34 can be answered without regrouping.
Answer:
If f(x) = 5x + 40, what is f(x) when x = –5 (D)
What is the inverse of the function f(x) = 2x – 10? (B)
Step-by-step explanation:
Answer:
18 performers
Step-by-step explanation:
I just multiplied 30 by 0.6 (the decimal form of 60 percent) and got 18
Answer:
The rate is 
Step-by-step explanation:
The rate, in cents per minute, is given by the multiplication of the how much you paid by 100 and divided by the number of minutes.
The multiplication by 100 happens because the cost is in dollars, and each dollar has 100 cents. So
1. Functions of the form f(x)=ax+b, where a is non zero, are called "linear functions" and the graphs of them are inclined lines.
2. If a>0, the line is increasing, so it gets higher as we move x to the right
If a<0, the line is decreasing.
3. There is no x we are not allowed to plug in the function: so Domain = all Real numbers
4. Since the lines are either increasing or decreasing, f(x), represented by the y values, take all values from -∞ to +∞. So Range = all Real numbers.
f(x)=4x (increasing line, 4>0) ,
g(x)=-x+4, h(x)=-4x (decreasing lines, -1<0, -4<0)
all f, g, h have Domain AND Range : All real numbers
