An interior designer charges customer's an initial consultation free plus an hourly rate. The table show's the linear relationship between x, the number of hours, and y, the total cost of hiring the designer.
a. find the rate of change.
b. what does the rate of change represent in the context of the situation?

x. 0 2 8 15
y. 125 235 565 950

please help me!!

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Sam makes his sales calls according to a pattern. he travels either north or south depending on the calendar. some of his past trips were as follows: on february 17, april 24, june 10, september 19, and november 3 he drove north. on february 28, may 25, august 22, november 20, and december 18, he drove south. describe sams' pattern. in which direction will sam drive on oct4 and oct 24?

Find the nonpermissible replacement for binthis expression.b2/5b +5