Volumes scale as the cube of a corresponding dimension. Therefore, if the radius of a sphere is doubled (r becomes 2r), the surface area becomes 2 squared, or 4 times the original surface area. The volume would become 2 cubed, or 8 times the original volume.
(7^2)x = 1
49x = 1
x = 1/49
Part B
7^0 = 1
so we have
1x = 1
x = 1
(2, 4.50) (4, 6.00) are the two ordered pairs
4*1.08
=4.32kg
Gavin bought 4.32kg of cheese.
Hope this helps! A thanks/brainiest answer would be appreciated :)