How many solutions are there to the following system of equations?
4x - 14y = 6
-2x + 7y = -3
a. 0
b. 1
c. 2
d. infinitely many

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

How do you write something in scientific notation?