6+ x is an example of a. a variable b. an expression c. a constant d. a formula exsplain how you got the answer and ill give you !

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay