Is it 1/2x2 + 1/5x a polynomial

Hundred and tens tables to make 430 in five different ways

Is the number 128.439 a rational number

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation