Which number is between pi and what number is between pi and √14?
a: 1.5
b: 2.5
c: 3.5
d: 4.5

to find the unit price of an object, you divide the price by object. you are trying to find out how much an object cost per unit.

for instance, lets say you have 50lb of ice cream(object) that cost 8.00 dollars(price). to find the unit cost, we take the 8.00 and divide it by 50, which will give us .16 cents per pound. we can check this by multiplying .16 by 50 = 8.00

so

object = e2

price = d2

unit price = c2

formula for c2:

=d2 / e2

so in my example about ice cream, we would have the following.

e2 = 50

d2 = 8.00

c2 formula:

=d2 / e2

i'm pretty sure the answer would b. 8

here is something that relies on definition of subset and logical implication:

the definition of a subset is that if there are two sets a and b of a certain universe, a is a subset of b if every element in a is also an element of b, i.e.

  for all x, if x ∈ a, then x ∈ b

the empty set ∅ has no elements, so if a is any set from any universe, then ∅ ⊆ a (∅ is a subset of a) is true if

  for all x, if x ∈ ∅, then x ∈ a

clearly, x ∈ ∅ is always false because the empty set has no elements. so this implication is always true (remember that logical implication is only false if a true premise implies a false conclusion), thus making ∅ ⊆ a always true.