The answer is
a1 =-2/9
a2 =4/3
a3 =6
-2x+10=-5x-2
-2x+5x=-2-10
3x=-12
x=-12/3
x=-4
76 or 77. 2/3 times x/115. 2 times 115 is 230. 230 divided by 3 is 76.6666666667.
18 straws because 72 divided by 4 is 18 that is an example of summary number modeling.
8 pieces of wood. It takes 6 inches to make 1 dowel, so with 4 feet (48 inches) you could make 8 dowels per board. You would need 7.5 boards to make 60, but you cant buy half a board, so the answer is 8