Morgan left a 15% tip for a restaurant meal that costs $19. she used the expression 1.15(19) to find the total cost. which equivalent expression could she also use to solve this problem ?
a. 1 + 0.15(19)
b. 19 + 15( 19)
c. ( 19 + 0.15) 19
d. 19 + 0.15( 19 )

For what values of x is x2 + 2x = 24 true?

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

The customer price index(cpi), which measures the cost of a typical package of customer goods, was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely. use data points to find such a line and then estimate the requested quantities