bro please help me ill give brainliest to the first one to answer correctly. its for some iready assessment

Write each expression in exponential form and find its value. 3 x 3 x 3

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Anature center offer 2 guided walks. the morning walk is 2/3 miles. the evening walk is 3/6 mile. which is shorter