A checking account is set up with an initial balance of $4800, and $400 is removed from the account each month . wrie a function that models the amount of money in the account after m months.

no pictures of the graph

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 -

-1/4 > -1 2/3. -1/4 is greater than -1 2/3 because it is closer to 0 on the number line.