SOOMEONE PLEASE HELP ME just answer these math problems (don't put an answer if you cant do it please because I checked all the time and i need this so BAAAD just comment for questions and more) :)

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

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.

Compare the cost of the bike trips from the two companies shown. for both the cost in a linear function of the number of days which statements is true