Which strategies can be used to solve this problem?

rosa organized a game day at her house. she plans to have 2 groups of 5 people play charades, and 3 groups of 4 people play board games. what is the greatest number of people who could be at rosa's game day?

choose all answers that are correct.

a.
draw a diagram.
draw 2 squares and 5 circles. then draw 3 squares and 4 circles. add the total number of squares and circles.

b.
use logical reasoning.
think that finding 2 groups of 5 is the same as 2 × 5 = 10 and that 3 groups of 4 is the same as 3 × 4 = 12. then add 10 + 12.

c.
model the problem.
show 2 groups of 5 chips and 3 groups of 4 chips. then count all the chips.

d.
translate into an equation.
2 × 3 × 4 × 5 = n

introduction, methodology, results, discussion

step-by-step explanation:

an observational study is one which consists of actual observation to record data and then analyse the data.

there are a number of factors that should be analyzed before starting an observational study.

the main four factors are:

i) introduction:   this should be analysed to check whether the purpose of the study is correctly established and the data recorded are appropriate for the study

methodology:   the method of collecting the data, such as whether randomly selected, and whether sample size matches with the population to be studied, whether questions asked are easy to answer by common men, etc.

results: then results such as summary of data with comments should be studied thoroughly

discussion:   the last is the discussion, this can be either by management people or persons who are all interested , etc.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

b

step-by-step explanation:

u take $75 minus $60.the anwer/original($75)multiply by 100