10.
5 multiplied by 2 "5 x 2" = 10
True because it is used to collect information on data tables and other things.
well the formula to reflecting across the x-axis is (x,-y).so the final points are A'(2,-2) B'(3,-7) C(5,-5) ANSWER
additional information
By the way the -y in the formula does not mean every number will always be negative it means switch the sign so if the point is (5,-7) than reflecting across the x-axis it would be (5,7)
1 whole, 1 tenth, 10 ones = 12 tenths