Answer:
37$
Step-by-step explanation:
this problem can actually be solved with a calculator!
12 + 15 + 10 =
37
You square it so for example the first one would be 1
Answer:
-3x + 31
Step-by-step explanation:
First distribute
2x + 16 -5x +15
Collect like terms
-3x + 31
Answer:
Spencer and Abigail are correct
Lauren is incorrect
Step-by-step explanation:
Spencer and Abigail are correct
Slope = change in y ÷ change in x
Or 
Let
= (3, -1)
Let
= (5, 4)

This is Spencer's method
Let
= (5, 4)
Let
= (3, -1)

This is Abigail's method
It doesn't matter which point you label as point 1 and point 2, as long as you carry out the slope calculation correctly.
Lauren's calculation is wrong as she calculated her slope as:
where it should have been 
Answer: 3560
Step-by-step explanation: GCF of 400 will be 40 and the LCM will be 3600 so if you are doing LCM-GCF it would be 3560