Alecia cashed her paycheck and used half her earnings to take three friends to dinner. she spent $42.15 on dinner and she brought home more than $20.00. write an inequality to represent the situation, using x to represent the amount of alicia’s paycheck.

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

Can someone me i’m confused. will give brainliest and a whole bunch of points

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?