The function C(m) = 49.99m represents the total cost of Josie's cell phone bill for months. She decides to switch to a new company that offers a better data plan, but changes a higher monthly rate. Her new phone plan is modeled by the function C(m) = 64.99m.

Write a function D(m) that models the difference in the cost between the two cell phone plans after m months.
D(m) =

After 3 months, how much more has Josie paid for her new plan?

Sherina wrote and solved the equation. x-56=230 x-56-56=230-56 x=174 what was sherina’s error? sherina’s work is correct. sherina only needed to subtract 56 from 230. sherina made a subtraction error when subtracting 56 from 230. sherina should have added 56 to both sides of the equation.

Easy points boii. read it. ya. fresh

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.