Naomi pays $1.50 each time she rides the city bus. She has already ridden the bus 18 times so far this year. The expression represents the amount of money she expects to spend on bus rides for the entire year.

$27

Step-by-step explanation:

18 times $1.50 = 27 dollars a year

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.