Find the tenth term of the sequence: -6,1,8...

Is it 57?

For the sequence:2,4,8,16 the value of s4 is____.
Is it 8?

Find the 7th term of the sequence: 1,2,4,...
Is it 64?

Which term of this sequence is 275?
5,10,15,...
Is it 1357?

Find the 7thterm of an. Arithmetic sequence whose first term is -8and whose common difference is 3.
Is it 10?