Titus works at a hotel. Part of his job is to keep the complimentary pitcher of water at least half full and always with ice. When he starts his shift, the water level shows 4 gallons, or 128 cups of water. As the shift progresses, he records the level of the water every 10 minutes. After 2 hours, he uses a regression calculator to compute an equation for the decrease in water. His equation is W –0.414t + 129.549, where t is the number of minutes and W is the level of water. According to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

Question

LilChris · Answer

and what are the options choices

Castro25 · Answer

150 minutes
160 minutes
170 minutes
180 minutes

LilChris · Answer

what do u think it is

AngeI · Answer

W-.0414T+129.549 
This is the equation correct?

LilChris · Answer

@Ultrilliam

LilChris · Answer

@umm

LilChris · Answer

@Hero

Eiwoh2 · Answer

Angel is helping, Chris. No need to tag others.

AngeI · Answer

-.0414(160)+129.549=64

AngeI · Answer

Subtract 129.549 from both sides
-.0414=64-129.549
-.4014=-65.549

AngeI · Answer

Divide both sides by -.04014 getting 158.33 which is about 160

Castro25 · Answer

$\color{#0cbb34}{\text{Originally Posted by}}$ @Castro25
thank you
$\color{#0cbb34}{\text{End of Quote}}$

LilChris · Answer

make sure when you post a question u always provide the answer choices, good job

Castro25 · Answer

thank you

AngeI · Answer

No problem c: