You Can Never have Enough SAT Math Practice…

  1. Staples now sells their own notebooks. Making notebook has a fixed factory cost of$6,000 and a per unit cost of $0.58 per notebook. Staples sells these notebooks for $3.99 each.
    1. As a function of the number of notebooks staples sells (n), write an equation for Staples’ profit P(n).
    2. How many notebooks does Staples need to sell in order to make $7,500 in profit?
    3. Write Staples’ cost function for notebooks where C(n) is cost in terms of the number of notebooks Staples produces. What is the fixed cost and the variable cost?
    4. In 2013, Staples decided to sell these notebooks for $2.50 instead of $3.99. The company returned zero profit. How many notebooks were sold? What was Staples revenue for notebooks in 2013?
  2. If increasing 20 by P percent gives the same result as decreasing 60 by P percent, what is P percent of 70?
  3. Sara has some oranges. She sold 40% more than she ate. If she sold 70 oranges, how many did she eat?
  4. When y=kx, k is a constant and when y=50, x=12. Find y when x is 5.
  5. 8+12x is 18 more than 35. What is the value of 20x.