The difference between twice a number, x, and a smaller number, y, is 3. the sum of twice the number and the smaller number is-3. which equations represent this situation?

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?