Me with this question plz! the equation t=0.07c represents the tax t, based on the cost c, of an item. which part of the equation represents the constant of proportionality?
a: t
b: 0.07
c: c
d: 7
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Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Acar travels at an average speed of 56 miles per hour. how long does it take to travel 196 miles

If a is a nonzero real number then the reciprocal of a is