A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 60 cm/s. Required:
a. Express the radius r (in cm) of this circle as a function of time t (in seconds).
r(t) = cm

b. If A is the area of this circle as a function of the radius.
Find A ∘ r.
(A ∘ r)(t) =

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88

the answer is "add 2y and y"

step-by-step explanation:

you need to collect the like terms first.