Find the sum of the digits of each multiple of 9 below.
Sum of digits
9.1=9
9
9.2 = 18
1 + 8 = 9
9.3 = 27
9.4 = 36
9.5 = 45
9.6 = 54
9. 7 = 63
9.8 = 72
9.9 = 81
Describe a pattern. (Do you think it will continue?)

Write a corresponding real world problem to represent 2x - 125=400

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year. how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?