PLEASE HELP ILL GIVE BRAINLIST!!

Multiplying an even number of negative numbers gives an answer that is choose from:

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.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.