The sum for three numbers is 57 the second number is 2x the first the third number is 18 less than the second what is the third number

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

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.

For which pair of functions is (gof)(a)=|a|-2?