A ski resort charges a fee for renting skis or snowboards that is proportional to the cost of admission. The admission cost for skiing is $32 and the total cost (cost of admission and fee) is $54.40. The admission cost for snowboarding is $38. What is the total cost for snowboardingThe total cost for snowboarding is $
124
. The percent of the fee is
%. This is because snowboarding costs $
and the fee is $
which makes the total cost $
.

the anwser is d) 75°

step-by-step explanation:

ending amount = beginning amount / (2^n)

where "n" = number of half-lives (or elapsed time / half-life)

ending amount = 50 mg / (2 ^10 / 5.3)

ending amount = 50 mg / (2 ^ 1.8867924528)

ending amount = 50 m / 3.6981210597

ending amount = 13.5203794557 mg

or about 13.5 mg remain

source:  

1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5