Carly withdraws $18 from her bank account. Which number line represents this amount?

4th number line.

Step-by-step explanation:

The other 3 number lines don't make sense.

#1: The dot is between 10 and 15, and -18 is less than 15, so incorrect.

#3: The dot is between -15 and -10, and -18 is lesser, so incorrect.

#2: The dot is between 10 and 15, and -18 is negative, so incorrect.

∴ #4 number line is correct

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.