The number N is the smallest positive integer with the sum of its digits equal to 2020. What is the first (leftmost) digit of N?​

Is the open sentence 5x-2=3x+2 true when x=2? justify your answer.

The difference between tax advoidance and tax evasion

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?