Math (General)

Question 1

Remainder

Answer 1

Question 2

Terminating Decimal

Answer 2

if the simplified denominator of a fraction has any primes besides 2 and 5,
it will not terminate.

Any simplified denominator that has any number of 2’s and / or 5’s will
terminate.

7/160 will be a terminating decimal, because the denominator only has 2’s
and 5’s.

7/12 will not terminate, because the denominator has something besides
2’s and 5’s (it has a 3)

Question 3

Unit Conversion

Answer 3

Question 4

Optimization (greatest/least possible)

Answer 4

• if they want us to maximize a function, we normally need to make some
  nonnegative quantity zero.

f.e. to get the maximum value of f(x) = 87 – (x+5)^2
you’d want x to be -5.

The maximum value of f(x) is 87, when x = -5.

• in statistics problems, when you’re trying to maximize one data point, you want to minimize all the other data points. You normally know the sum of the entire set, so you’re working from a budget.