Answer:
x/4 - 5
Step-by-step explanation:
Let :
Number of beads in bag = x
Number of beads left = x - 20
Identical beads made from remaining = 4
Number of beads on each necklace :
Number of beads left / number of beads made
= (x - 20) / 4
= x/4 - 5
The equation you are asking for is
40*(t+3) = 55*t,
where t is the time counted after the second car started.
The equation says that the distance covered by each car from the starting point to the catching point is the same for both cars.
$80
The answer is 645,000
Answer: the second graph