Kelli's mom takes a 400 mg dose of aspirin. Each hour, the amount of aspirin in a person's system decreases by about 29% Write an explicit formula that models the amount of aspirin after I amount of hours, A(t) = 400(0.71)' it b, A(t) = 400(1.029)' A(t) = 400(0.71) d. A(t) = 400(1.29)​

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 -

$205,000 here you go i had to guess it but i got it correct so yeah

lol   i know im kinda tired too