The function M(t) = 40e −0.223t can be used to find the number of milligrams of oxycontin in a persons bloodstream t hours after being administered.

a - base

b - exponent

so,

answerim :

n

step-by-step explanation:

im not sure but my dad knows

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.