Sierra was given the following expression to solve. 30 + 20 + (32 − 4) x 2

She incorrectly wrote 32 as her answer.
Which statement best describes her mistake?

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Adozen bananas weigh 3 pounds how many ounces does 1 banana weigh

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?