(1) A long distance telephone service provider charges $30 for the first 80 minutes of international calls. For each minute over 80 minutes, the
company charges $0.60 per minute. Write an equation that represents the
total cost C for x minutes of long distance calls. Calculate the cost of talkin
105 minutes internationally.

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

If square root x = -7, then x= -49 true or false

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?