his morning, Tessa processed two catering orders at the sandwich shop where she works. The first order was for 4 trays of club sandwiches and 9 trays of vegetarian sandwiches, at a cost of $97. The second order, which cost $65, was for 5 trays of club sandwiches and 5 trays of vegetarian sandwiches. How much do the trays cost? ​

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°.