A pillow that usually costs $18 is marked down 25%. Use the table to find the pillow's new price.
Fill in the missing amounts to solve the problem.
100% = $18 original price
25%
markdown = a
new price = b
a
=
b =

With #! i’ve tried to figure it out but i can’t.

Which table shows a proportional relationship between miles traveled and gas used?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.