Evan is training for a race on Saturday. He wants to run a total of 12 miles total for the week before the race. On Monday he ran 3 miles, on Tuesday he ran 5 miles, he took Wednesday and Friday off. How many miles does he need to run on Thursday to meet his goal?

4 miles

Step-by-step explanation: what you need to is 5+3 which is 8 then 12-8 what is 4 so he needs to run 4 miles on Thursday

not sure but it may be b, as i said i'm not sure.

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 -