Abox of chalk and 2 dusters cost $10. 3 boxes of chalk and 2 dusters cost $18. find the total cost of 2 box of chalk and 1 duster.

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

What is the value of x in the equation7x+2y=48 when y=3

30 ! the graph shows the number of siblings different students have. select from the drop-down menus to correctly complete the statement.