Byron bought a keyless entry door lock that has the digits 0 through 9 on the keypad. he wants to choose a three-digit entry code. how many different combinations are possible, if the digits can be repeated?
27
30
729
1,000'

Mexico city, mexico, is the world's second largest metropolis and is also one of its fastest-growing cities with a projected growth rate of 3.2% per year. its population in 1991 was 20,899,000 people. use the formula p = 20.899e0.032t to predict its population p in millions with t equal to the number of years after 1991. what is the predicted population to the nearest thousand of mexico city for the year 2010?

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.