A) Kara's fee for the second child is $5
3.5 because 42 divided by 12 is 3.5
Answer:
Step-by-step explanation:
From the law of variation,
y <> 1/x, where <> is the constant of proportionality. Therefore
y = k/x where k is a constant
3 = k/5 and k = 15
To find x when y = 2.5(5/2)
Go back to the second equation
y = k/x
5/2 = 15/x
When you cross multiply
5x = 30.
Divide through by 5,
x = 6.
Answer: 0.67%/min or 40%/hr
Step-by-step explanation:
In 30minutes It charges 20%, in 1 minute, it will charge 20/30 = 0.6666
In 1hr it will charge 40%, twice the amount it charged in 30minutes (From 35 to 55)
(g*f)(0)= (x^3)*(2x+6)
(g*f)(0)= (0^3)*(2(0)+6)
(g*f)(0)= (0)*(0+6)
(g*f)(0)= (0)*(6)
(g*f)(0)= 0