Question 162310
formula is given as:
{{{a(x) = 100*e^(-.01657*x)}}}
since x = 257, equation becomes
{{{a(x) = 100*e^(-.01657*257)}}}
which becomes
{{{a(x) = 100*e^(-4.25849)}}}
which becomes
{{{a(x) = 100*.014143643}}}
which becomes
{{{a(x) = 1.41436432}}}
rounded to the nearest hundredth of a milligram equals
1.41
which is close to 1.42 but not quite right on.
since that's the only choice real close, i would assume 1.42 is the answer they are looking for.
answer is b. 1.42