Which expressions are equivalent to 6 - 4.5+ (-8) ? A 6 + 4.5 + 8
B 6 + 4.5 - 8
C 6 – 4.5'+8
D 6 - 4.5 - 8
E 6+(-4.5) - 8
F 6+(-4.5) + (-8).
G 6+ (-4.5) - (-8)

I'm pretty sure the answers are options D , E and F .

Step-by-step explanation:

So here's how I did it , I got the original expression , solved it and the answer I found is -6.5. So then I solved all the others and D , E and F gave me -6.5.

Hope this helps lol

1. Equation are,

d(t)= 6 t+2 is the equation for team A

and, d(t) = 6 t is the equation for team B

2. No , team B will not catch up to team A.

Step-by-step explanation:

Here, Team A is traveling 6 miles per hour and is 2 miles ahead of Team B.

x represents the number of hours

Then the total distance covered by A in t hours,

d(t)=6 t+ 2

And, Team B is also traveling 6 miles per hour.

Therefore, the total distance covered by B in t hours is,

d(t)= 6 t

Since, the speed of both teams are equal and already team A is 2 miles ahead of team B.

Therefore, for catching up to team A team B must be increase its speed.

Otherwise, It can not catch up team A.