A new bank customer with $4,000 wants to open a money market account. The bank is offering a simple interest rate of 1.9%. a. How much interest will the customer earn in 30 years? b. What will the account balance be after 30 years? au The customer will ea $ in interest:​

answer:

the area of the rectangle can be obtained by multiplying its sides

a_rect   = ((4x - 5)*(3x + 10))

a_rect   = [(4x - 5)*(3x) + (4x - 5)*(10)]

a_rect   = [12x^2 -15x + (40x - 50)]

a_rect   = [12x^2 + 25x - 50]

part a.

a_rect   = 12x^2 + 25x - 50

part b.

this expression corresponds to a second degree trinomial