2. A breeding program to ensure the survival of pygmy possumns is established art initial population of 50 (25 pairs). From a previous program, the expected population n years' time is given P n by P n =P 0 *2^ 0.3n.

4.0 ft

step-by-step explanation:

4.0 ft

you already gave the answer

step-by-step explanation:

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 -