7. find the volume of the above cylinder.
use 3.14 for pi.
1356.48 cu. cm
432 sq. cm
452.16 cu. cm
226.08 cu. cm

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)

With alll of except for the 2 that i did already

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?