You would use the function root(Xsub2-Xsub1)^2+(Ysub2-Ysub1)^2.
Now plug in your numbers.
This gives you root(7-1)^2+(5-(-3))^2.
Simplify to root(6)^2+(8)^2. Simplify again to root36+64.
Simplify one more time to root 100. now solve.
Your answer is 10.
Answer:
The 25% one would cut $79 from the price, so obviously she should use the $100 one
After the decimal, the first number is the tenth place, if the second number after the decimal is 5 or bigger then you round up the first number after the decimal. if it’s lower than 5 then you keep the same number
technically yes because even if you have a variable of just x, there is still a coefficient of 1
