3. Keith applies a new brand of fertilizer to his grass. He
finds that the rate at which the grass grows can be
modeled by a linear function. He observes that the rate of
growth is 1 centimeter every 4 days. After 20 days, he
measures the height of the grass to be 11 centimeters.
What is the initial height of the grass? *

A) 5 centimeters

B) 6 centimeters

C) 7 centimeters

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?

In a study of the relationship between socio-economic class and unethical behavior, 129 university of california undergraduates at berkeley were asked to identify themselves as having low or high social-class by comparing themselves to others with the most (least) money, most (least) education, and most (least) respected jobs. they were also presented with a jar of individually wrapped candies and informed that the candies were for children in a nearby laboratory, but that they could take some if they wanted. after completing some unrelated tasks, participants reported the number of candies they had taken. it was found that those who were identiď¬ed as upper-class took more candy than others. in this study, identify: (a) the cases, (b) the variables and their types, (c) the main research question, (d) identify the population of interest and the sample in this study, and (e) comment on whether or not the results of the study can be generalized to the population, and if the ď¬ndings of the study can be used to establish causal relationships.