2980 round everything to the nearest tens and add with your head to get it
So sorry i don’t know the answer but get an app called desmond, it helps a lot
3x+y=-5
12x+5y=27
Let y =-5-3x
Insert y into equ.2
12x+5(-5-3x)=27
12x-25-15x=27 den rearrange
-3x=2 den x =-2/3
Den put xinto equ 1
3(-2/3)+y=5
-2+y=5(collect like terms)
Y =7
Distance = Speed x time
60MPH x 3 Hours = 180 Miles
Therefore at 60MPH, he must drive 1 extra hour to reach is destination.
A) 24(2+3)
hope this helps❤️
