You and a friend sell hats at a fair booth. you sell 16 hats on the first shift and 21 hats on the third shift. your friend sells x
hats on the second shift.

write an expression for the number of hats sold.

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

B. two events are dependent if the occurrence of one event changes to occurrence of the second event. true or false

The polynomial 2x3 + 9x2 + 4x - 15 represents the volume in cubic feet of a rectangular holding tank at a fish hatchery. the depth of the tank is (x – 1) feet. the length is 13 feet.