20 points for both questions Q22.
Here are the first four terms of an arithmetic sequence.
6 10 14 18
a) Find an expression, in terms of n, for the nth term of this sequence.
b) Write down an expression, in terms of n, for the (n+1)th term of this sequence.

Q23.
a) Write 1 390 000 in standard form.
b) Write 0.005 in standard form.
Would appreciate working out for this!

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?