5,30,180,1080 what is the common difference

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

Which rational number could be graphed between -4 and -5

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.