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?
A.) 27
B.) 30
C.) 729
D.) 1,000

what graph

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

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