PLEASE PLEASE HELP PLEASE PLEASE HELP ME 12. A brand of chainsaw requires a gasoline to oil ratio of 30:2. That means you need 30 parts of gas for every 2 parts of oil.

a) How much gasoline would you add to 20 mL of oil?

b) Your gas can holds 10 L. You plan on adding the oil at home, then driving to a gas station to add the gasoline. How much gasoline and how much oil will you need?

black lol

step-by-step explanation:

h

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problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

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 -