To answer let e be the amount of Dexter's earning. From the given conditions, it is implied that this value should be equal or more than $50. Further, this amount should also be less than or equal to $100. Mathematically, this can be expressed as,
50 ≤ e ≤ 100
The answer is letter D.
The answer is X=4.
It is both parallel to x=-3 and passes through (4,2)
280 because 28 *10 is 280.