y=-9x-4
Slope intercept form uses the formula, y=mx+b, where m is the slope and b is the y- intercept.
I hope this helps. Have a great day!
212°F
147°F
23.2 min
1) Initial temperature for t=0
T(0)=68+144e^(0)=68+144=212°F
2) After 15 min
T(15)=68+144e^(-0.04*15)=68+144e^(-0.6)=147°F
3) 125°F -> t=?
125=68+144e^(-0.04t)
144e^(-0.04t)=125-68=57
e^(-0.04t)=57/144=0.4 you can apply ln on both sides:
-0.04t=ln(0.4) solving you get t=23.3 min
9 + 8 + 3x
you can only add like terms
9 and 8 are like terms so you can add those
but 3x does not have any like terms
so the answer is
17 + 3x
PPLMway will help
Step-by-step explanation:
