Maya works 16 hours per month at her part-time job earning $6.75 per hour. she earns some additional money house sitting for neighbors and friends. maya charges $30 per day to house sit if there are no pets. if the house sitting includes pets, then she charges $40 per day. last month, maya spent 3 days house sitting with no pets and 5 days house sitting with pets. what is the total amount of earnings maya had for the month? a. $270 b. $290 c. $378 d. $398

I think its $398 because 16 x 6.75 = 108 + 3 x 30 = 90 + 5 x 40 = 200 = $398

Option d. $398

Step-by-step explanation:

Maya works 16 hours per month at her part-time job earning $6.75 per hour.

Maya's monthly earning  from her part-time job = 16 × 6.75

                                                                               = $108

She also earns from house sitting. Where she charges $30 per day to house sit if there are no pets. and $40 per day if the house sitting includes pets.

Maya spent 3 days with no pets and 5 days with pets.

Her total earning = $108 + ( 3 × 30 ) + ( 5 × 40 )

                            = $108 + $90 + $200

                            = $398

Total earning of Maya is $398 for the month.

15.5

step-by-step explanation:

5

∑

n = 1

substitute n = 1, 2, 3, 4, 5 and sum the terms

= + + + 2² + 2³

= 0.5 + 1 + 2 + 4 + 8

= 15.5

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.