Iwill mark you the brainliest if you answer quickly and correctly the amount of money that mary earns varies directly with the number of hours worked. if mary earns $320 for working 40 hours, determine the constant of variation. a) 6 eliminate b) 7 c) 8 d) 9

Easy points boii. read it. ya. fresh

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2 acellus answer

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables