It takes 12 men 5 days to complete a job. (a) Work out how many days it would take 3 men to complete the same job.
(2)
(b) (State one assumption you made in working out your answer.
(1) How will your answer be affected if your assumption is not correct?
(Total for question = 4 marks)

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?