Question

marissa wants to know how many points she scored in her teams last two basketball games. choose the action that marissa should use to do this calculation.
points in game 1 (pts)
add
total points (pts)
points in game 2 (pts)

a school principal needs to determine how many students missed an assembly by comparing the roster of total students to the number counted at the assembly. choose the action that the principal should use to do this calculation.
students present at assembly (students)
subtract
students absent (students)
total students on roster (students)

susannah is trying to calculate how for an unlimited bus pass to be worthwhile. choose the action that susannah sh
normal cost per ride ($/ride)
use co
rides (rides)
cost of pass ($)

justine wants to calculate the cost of each bus ride she takes if she buys a monthly bus pass for a fixed fee. choose the action that justine should use to make this calculation.
bus rides (rides)

cost per ride ($/ride)
cost of pass ($)

Explanation:

Step1: Marissa's total points calculation

To find total points across two games, we add the points from each game.
Action: add

Step2: Principal's absent students calculation

To find absent students, subtract present students from total roster students.
Action: subtract

Step3: Susannah's bus pass calculation

To find how many rides make the pass worthwhile, we need to find how many single rides equal the pass cost, which uses a conversion factor (comparing pass cost to per-ride cost).
Action: use conversion factor

Step4: Justine's per-ride cost calculation

To find cost per ride with a pass, divide total pass cost by number of rides.
Action: divide (implied as the missing operation)

Answer:

1. Marissa: add
2. Principal: subtract
3. Susannah: use conversion factor
4. Justine: divide