7th Grade x y input output tables

i need help with x and y input output tables for 7th grade i don't understand what 5x means or what to do!
Math hw problems:
1. y=4x+3 x=1,2,5,10,20
2.d=3.5t t=1,2,5,10,20
Please help ASAP!!!!!

asked by Sadie
  1. whatis y=4x+3

    posted by jamir
  2. to figure out what x is you have to get the numbers to cancel out so that the vairiable will stand alone

    posted by unknown

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