Atanker truck fills the gas station's reservior at the rate of 12.5 gallons per minute. if the reservior was empty and it is now 35 gallons full, how long has the tanker beenfilling the reservior?

answer: i oofed

step-by-step explanation:

oofed=wow

i got 10.28 but that rounds up to 10.3

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 -