How do you do this problem

You're on the right track. You found that 18% of $12 is $2.16. This is the amount of the tip only. Add this onto original bill $12 to get 12+2.16 = 14.16, which is the final bill (including tip).

An alternative is to turn 18% into 0.18 and then add 1 to this to get 1.18

When we multiply by 1.18, it will increase the original amount by 18%

So, 1.18*12 = 14.16

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 -

20days louise can read300 pg

step-by-step explanation:

1 day 15 pg 300: 15= 20

x day 300 pg