The expression (5x + 4)^3 in expanded form is 125 x3 + 300
x2 + 240 x + 64. The expression will
have also a root of x = -4/5. This is the form of trinomial expansion and can
be solve by multiplying the the term 3
times.
(25/20 -1)*100% = 25%
From 20 to 25 is an increase of 25%.
Answer:12/3=4 he washed 4 cars in an hour so he earned $20 per hour since 4*5=$20
Step-by-step explanation:
