Isabella sells only rings and necklaces on her website. Rings sell for $50 each, and necklaces sell for $30 each. If Isabella sold 25 pieces of jewelry and her sales totaled $1050, how many necklaces did Isabella sell

Isabella sold 10 necklaces in total

Let the amount of necklaces sold be x

Let the amount of Rings sold be y

If Isabella sold 25 pieces of jewelry, then;

x + y = 25

x = 25 -y 1

Also, if Rings sell for $50 each, and necklaces sell for $30 each with a total sales of $1050, then;

30x + 50y = 1050 2

Substitute equation 1 into 2:

30(25-y) + 50y = 1050

750 - 30y + 50y = 1050

750 + 20y = 1050

20y = 1050 - 750

20y = 300

y = 15

Recall that x + y = 25

x =25 - y

x = 25 - 15

x = 10

Hence Isabella sold 10 necklaces in total

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Given:

Selling price of a ring = $50

Selling price of necklace = $30

Total pieces of jewelry sold = 25

Total sales = $1050

To find:

The number of rings and necklaces sold.

Solution:

Let number of rings sold be x and number of necklace sold be y.

Total pieces of jewelry sold = 25

           ...(i)

Total sales = $1050

         ...(ii)

Multiply equation (i) by 30 and then subtract the result from equation (ii).

Divide both sides by 20.

Substitute x=15 in (i).

Therefore, the number of rings is 15 and number of necklaces is 10.

the 4th choice is the correct one

step-by-step explanation:

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.