Answer:
my answer is in this picture. sorry about my handwriting and my presentation because i am a Asian student and cant show better presentation
15 copies is left in bookstore
T stands for time
Step-by-step explanation:
Rina is 1/4 feet taller than Ryan
(height of Rina)-(height of Ryan)
6x+3/8-(5x+1/8)
6x+3/8-5x-1/8
x+3-1/8
x+2/8
x+1/4
positive
if you time the three by a postive then times that by a negetive you get a negitive if you time by two negitives you get postive
