exam Maths Puzzle Numerical Ability

Please help. What am I doing here?
In exercise 30, if f(x)= 4x-3, find the following:
f(-1)

Read Solution (Total 1)

exam Other Question

log(3)9
Evaluate:
Simplify the expression.

17. 4c/9 + 8c/9

Any help with this equation would be Greatly</b> appreciated.