Which student below had the fastes pulse? Alisha - 110 bpm Melissa - 54 beats in 30 seconds Kaitlyn - 28 beats in 15 seconds Brenna - 9 beats in 10 seconds a Alisha b Melissa c Kaitlyn d Brenna

idk

step-by-step explanation:

i don't know

c.

step-by-step explanation:

1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5