15=-2(2t-1) -- expand brackets
15=-4t+2 -- subtract 2
13=-4t -- switch signs, best to have a positive variable
4t=-13
t=-13/4
Answer:
9
Step-by-step explanation:
For 4x/x+3, just cancel the x to get 4+3=7
For -4x/x+6, cancel the x to get -4+6=2
7+2=9
Hope this helps
Answer:
c
Step-by-step explanation:
just substitute a big number into x like 10^6 as it approaches

and a big negative number like -10^6 as it approaches

Answer:
B
Step-by-step explanation:
add 7 to get away the 7 on the left hand side
square both side to eliminate square root
Answer:
7.12 kilometers
Step-by-step explanation:
Add the amounts of kilometers to find the total :
3.8 kilometers + 3.32 kilometers = 7.12 kilometers