In the cafeteria, there is one large 10-seat table and many smaller 4-seat tables. There are enough tables to fit 200 students. Choose the inequality whose solution is

the possible number of 4-seat tables in the cafeteria.

A. 10 + 4x < 200

B. 10 + 4x ≤ 200

C. 10 + 4x > 200

D. 10 + 4x ≥ 200

The temperature of a chemical solution is originally 21 ? c . a chemist heats the solution at a constant rate, and the temperature of the solution 75 ? c after 1212 12 minutes of heating. the temperature, tt t , of the solution in ? c is a function of x , the heating time in minutes. write the function's formula.