An inch is equal to about 2.54 centimeters. write an expression which estimates the number of centimeters in x inches. then estimate the number of centimeters in 12 inches.
i don't get this math question at !

When they are both racing on hoverboards, victoria is 3 times as fast as her brother max. when she is on foot, she is 3 times slower than max on his hoverboard. they took off on hoverboards at the same time, but after 12 minutes, victoria’s hoverboard broke and she immediately started to run. if the race was a tie, how long, in minutes, did it last from start to finish?

Opposite angles in a parrellelogram are

Suppose that 15 inches of wire cost 60 cents. at the same rate, how much (in cents) will 12 inches of wire cost