Harmony earns 42,000 salary in the first year of her career. Each year, she gets a 4% raise. Which expression gives the total amount Harmony has earned in her first n years of her career?

Step-by-step explanation:

This is a compound interest formula expressed as:

Where

#We substitute the given values to determine amount after n years as follows:

Hence, the amount earned after n years of her career is given by

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

the answer is 5/14.

hope this .