If my friend gives me $1 to buy candy how much would i pay her back?

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.

Witch represents the inverse of the function f(x)=1/4x-12

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)