Answer
(a.) The scientific notation is $ \$ 1.284 \times 10^3 $.
Decimal notation rounded to the nearest dollar is $ \$ 1,284 $.
(b.) The average monthly per person benefit is $ \$ 107 $.
Work Step by Step
(a.)
In the graph consider ninth and tenth column.
The ninth column.
The federal cost (billions of dollars) for food stamps is $ 33 $.
In scientific notation $ 3.3 \times 10^{10} $.
The tenth column.
and The enrollment (millions of people) for food stamps is $ 25.7 $.
In scientific notation $ 2.57 \times 10^{7} $.
Average per person benefit $ = \frac{federal cost}{enrollment} $.
$ = \frac{3.3 \times 10^{10}}{2.57 \times 10^{7}} $
$ =1284.05 $.
Rounded to the nearest dollar is $ =\$ 1,284 $.
The scientific notation is $ =\$ 1.284 \times 10^3 $.
(b.)
The average yearly per person benefit for food stamps is $ =1284.05 $.
For monthly divide the yearly average by $ 12 $.
$ = \frac{1284.05}{12} $
$ = 107.00 $.
Rounded to the nearest dollar.
$ = \$ 107 $.
