Write the set using the roster method A={a|a an even number and 15< a< =25}

{16, 17, 18, 19, 20, 21, 22,23, 24, 25}

Step-by-step explanation:

Given the set A={a|a an even number and 15< a< =25}

The inequality 15< a< =25 mean the set A consists of all the values between 15 and 25 with 25 inclusive (due to presence of the equal to sign)

Hence the required set A are {16, 17, 18, 19, 20, 21, 22,23, 24, 25}

Note that 15 is excluded from the set of number since 15<a i.e a > 15

step-by-step explanation:

yes it represnts a functio, their are not 2 of the same numbers on the both sides

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72