A sequence is defined by f(1)=5 and f(n)=3f(n-1) for n>0. Which of the following statements defines the nth term of f?
1)f(n)=5(3)^(n-1)
2)f(n)=3(5)^(n-1)
3)f(n)=5+3an
4)f(n)=3+5^(n-1)

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?