4) Suppose a model airplane club published a newsletter. Expenses are $.90 for printing plus $600 for research and writing. They charge $1.50 per copy of the newsletter. How many copies must the club sell to break even? Write let statements and equations to solve. Show all your work

You have two cards with a sum of -12 in both hands. a. what two cards could you have? b. you add two more cards to your hand, but the total sum if the cards remains the same, (-12).

An angle that measures between 90 and 180° is called a(,

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .