When rounding to the nearest thousand what is the least whole number that rounds to 347,00 thousand , 347,100 or 346,500

Find the value of p for which the polynomial 3x^3 -x^2 + px +1 is exactly divisible by x-1, hence factorise the polynomial

Can someone me out here and the tell me the greatest common factor

Which of the following is the explicit rule for a geometric sequence defined a recursive formula of a -5a for which the first term is 23?