A3cm x 2cm rectangle sits inside a circle with radius of 4cm

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?