Phil is paid £240 per week.
Each week he saves one-quarter of his pay.

b)
He is saving for a new bike that costs £349.
How many weeks does it take to save enough to buy the bike?

5.811... weeks = 6 weeks officially

Step-by-step explanation:

Phil saves £60 per week.

£349 ÷ 60 = 5.811... weeks, but as he will get his pay at the end of the week, he will be able to buy the bike after 6 weeks.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5