Every valid argument with true premises has a true conclusion. rewrite the above statement in the form v[x] x, if [y] then [z] (where each of the second and third blanks are sentences involving the variable x):

Let y(x)="x is valid and x has true premises" and z(x)="x has a true conclusion".

Step-by-step explanation:

The universe U is the collection of all arguments so that x∈U. The statement uses the universal quantifier ∀ represented by the word "Every". The words "valid", "with true premises" and "has a true conclusions" are properties of an argument x.

We can interptet the statement as: "For all x, (x is valid and x has true premises)→(x has a true conclusion)". Symbolically, (∀x)(y(x)→z(x)). The implication → can be read as "if y(x) then z(x)".

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

f(x)=4

step-by-step explanation: