Why does the method for solving by solving x=y not work when b=1? Because 1 raised to any power is equal to 1, is true for all real numbers x and y. The solution method fails in this case because it only gives values for which x=___
Fill in the blank.

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.

answer: 72: 111

step-by-step explanation: