Questions are in the attachments I’ll give a brainlist thanks

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)

See attachment below and find the equivalent of tan(∠qsr)

Can someone me find the original price? the discount is 5% and the sale price is $68.40