Final answer:
Abigail needs 15 team members for the 90-meter sack-relay race, with each member hopping 6 meters.
Step-by-step explanation:
Abigail is organizing a 90-meter sack-relay race where each team member will hop 6 meters. To determine the number of team members needed for each team, we can set up an equation.
If we let m represent the number of team members on each team, the equation would be:
6m = 90
To solve for m, we divide both sides of the equation by 6:
m = 90 / 6
Therefore: m = 15
Abigail needs 15 team members on each team to cover the 90-meter distance with each member hopping 6 meters.