Paige purchased 5x pounds of flour to make 4 identical sponge cakes. How much flour does each sponge cake require?

y=5x/4

Step-by-step explanation:

Let the pound for one sponge be y

4 sponge cakes cost 5x

1 sponge cake cost y

Cross multiply

4y=5x

Makes y the subject of formula by dividing both sides by 4

y=5x/4

r =

Step-by-step explanation:

Given

A = 4πr² ( divide both sides by 4π )

= r² ( take the square root of both sides )

= r