Which equation does the graph of the systems of equations solve? a) x2 − 2x − 1 = −x2 + 3 b) x2 − 2x + 3 = x2 − x + 1 c) −x2 − 2x + 2 = 2x2 − x − 2 d) −x2 − 2x + 1 = 2x2 − x + 2

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8