If i spend $70 shopping but i get 90% off, how much money do i need?

Your answer would be $7.

This is found by dividing 90 by 100, to make it into a decimal. This gives you 0.9.

You then multiply 0.9 and 70 together to get the amount of money that taken off. This gives you 63.

Finally, you subtract 63 from 70 to show how much money you would spend.

I hope this helps!!

The coordinates of point a right now is (-3,-1) you have to multiply these coordinates by a factor of 2 to get (-6,-2)