4tomatoes cost 3.40.how much does 1 tomato cost

Which of the fallowing best completes the sequence 12,8,5, a) 1 b) 2 c)4 d)0

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

On #16 : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.