Sheri is looking for a Christmas gifts for her daughters. She purchased a necklace that was originally $24 for her oldest daughter. The necklace was on sale for 20% off. How much did Sheri pay before tax?

I’m confused as to what you are asking 66 2/3 percentage wise

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post