Triple a number, minus the sum of the number and six

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?