For the first one all you need to know if how to expand brackets and collect like terms:
For the second one all you need to know is how much 20% of 18500 dollars is:
So
Number three is very much the same as number 2
I have an exam on tuesday and if i fail i will repeat the same grade so i really need your help with some questions.. I need the answers and working out also:
NOTE: They are not 'all' algebra
1) Work out 7-5x(6-1).
2) Tiago's father buys a car for $18500.
During the first year its value falls by 20%.
Calculate its value at the end of the first year,
3) Tiago buys a bicycle for $ 240.
During the first year it loses 13/40 of its value.
Calculate its value at the end of the first year.
4) The nth term of a sequence is given by the formula
n2(squared)
------- (over)
n+1
find (i) the 9th term,
(ii) the 99th term
Thank you.