Blood Alcohol Level equation

[xJoSephhhhh]

Use the Widmark Equation, to solve Question 6. Recall that g = 0.68 for men and g = 0.55 for women.

(6) A male student had five glasses of wine at a party. He weighs 160 pounds. How long will it take before his BAC is 0.08?

(i) 3.33 hours
(ii) 1.31 hours
(iii) -3.33 hours

is what I did right so far?
-0.015t(284.5) over 160.068
-0.015t (14.2 over 108.8) -
-0.015t (0.1305)

 

[mmm4444bot]

is what I did right so far?

I cannot answer because Widmark's Equation comes in many variations, and I do not recognize the form that you're using.

Please post the version of Widmark's Equation that you're using, including the symbol definitions.

 

[xJoSephhhhh]

B=-0.015 . t+(2.84 . N) over (W.g)

I used over to mean fraction cuz im not sure how to make one on this.
B=percentage of BAC
N=# of standard drinks (1 12-ounce beer, 1 5-ounce glass of wine, or 1 1.5-ounce shot of liquor) N should be at least one.

W=weight in pounds

g=gender constant

t=# of hours since the first drink

 

[mmm4444bot]

B=-0.015 . t+(2.84 . N) over (W.g)

I used over to mean fraction cuz im not sure how to make one on this.

We text fractions using grouping symbols where needed (to clearly show the numerator and denominator) and a forward slash (to show the division).

B = -0.015t + 2.84N/(Wg)

-0.015t(284.5) over 160.068

It looks like you forgot to type the + sign, above.

Please do not type periods to show multiplication. Type asterisks, instead.

Typing 160.068 means the decimal form of the number 160 + 68/1000

Typing 160*0.68 means multiplication of 160 times the decimal number 0.68

Okay?

-0.015t (14.2 over 108.8) - ← Why type a minus sign here?

-0.015t (0.1305)

You correctly substituted values for the right-hand side of Widmark's Equation, but where is the addition? I see no + sign.


Fixing this error and including the left-hand side of Widmark's Equation gives the following.

0.08 = -0.015t + 0.1305

Do you know how to solve this equation for t?



PS: The correct multiple-choice answer in your original post is not properly rounded

 

[xJoSephhhhh]

No I don't know how 2 solve for t. How do you do that? Do you add those two numbers together? If there was an = sign rather than a plus I would assume you divide. Perhaps when I saw the t I confused it with a plus sign or something like that.