A)In June a man

bought x balls
for $25 write down , in terms of
x the cost of each ball (in $)

b) In july he could have bought five more balls for the same amount of money. write down in terms of x the cost of each ball (in $)

c) given that each ball in july had cost 25 cents less. use your answers in a & b to form an equation in terms of x and show that it simplifies to x^2 +5x-500=0

d) solve the equation in (a)

e)hence , write down the number of balls bought in june