You and a friend are on a road trip to a destination that is 442 miles away and only have 7 hours to get there. You drive the first leg of the trip at 62 miles/hr for 5 hours. How fast does your friend need to drive if you want to make it to your destination in under 7 hours?

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

i hope this is what you were looking for.

see attached graph

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17