NEED HELP ASAP WILL GIVE BRAINLIEST (DO NOT JUST TAKE POINTS OR I WILL REPORT YOU)

If f(x)= x2 + 2x - 6 and g(x)= 3x2 - 5x - 7, find f(x)-g(x).

A)
-2x2 - 3x + 1
B)
-2x2 + 7x + 1
C)
-2x2. 3x - 13
D)
4x2. 3x - 13

The circumference of a circle is 5 pi cm. what is the area of the circle?

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

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.