4. Winter Break Shopping A total of 120 high school students
were surveyed about their winter break shopping habits.
The results revealed that 65% shop for new clothes,
50% shop for school supplies, and 40% shop for clothes
and school supplies. How many students shop for
clothes or school supplies over the break? (MT calendar
problem)

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Evaluate the expression. (9 + 5)(3 + 2)0