It's a linear function. We need only two points to the plotting of the graph.

D. The greatest a can be is 9 and the greatest b can be is 4. a+b= 13 which is less than 20
Answer:
-57.29
Step-by-step explanation:
500000000 is <span>5 x 108 is </span><span>scientific notation
</span>0.0000008<span> written in scientific </span>notation<span> is 8 × 10 </span>–<span>7</span>