Dawson practices soccer for 30 minutes each weekday. The expression 30x can be used to find the total number of minutes Dawson has practiced soccer. What does “x” represent in this expression? ANSWER CHOICES:

A)The number of minutes Dawson practiced each weekday.
B)The number of days Dawson practiced.
C)The total number of minutes Dawson practiced.
D)The length of Dawson’s practices

Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.