Answer:
If k is an integer, the number of toy cars Ken might have can be expressed as the interval
0 ≤ k < 25
9 times 5 equals 45 so yes
If r is the radius of a sphere its surface area = 4(pi)r^2.
If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
ФThe Answer is A).the first graph i know this is the correct Answer.Ф
