Question

If t(n) equals 5-2n, what is the 4th term?
Work out 3/4 of 7kg

Answer 1

easy
f(n)=5-2n
f(4)=5-2(4)
f(4)=5-8
f(4)=-3

-3 is 4th term

3/4 of 7kg=3/4 times 7kg=21/4kg=5 and 1/4kg