Javon pays $100 for three baseball cards for his dad. The cost of the JJ Vaughn card, v, was half the cost of a Derek Thomas card, t. The JJ Vaughn card was $20 more than the cost of a Miguel Sosa card, s. Javon uses the equation t+v+s=100 to show how much he paid for the three cards.

Which expression represents the total cost of the three baseball cards in terms of the cost of a JJVaughn card?
A, B, C, or D

Option 2. represents the total cost of the cards in terms of a JJ Vaughn card.

Step-by-step explanation:

Step 1:

Assume the JJ Vaughn card cost v, the Derek Thomas card cost t, and the Miguel Sosa card cost s.

From the question, we have

take this as equation 1.

take this as equation 2.

Step 2:

Since the total cost of all three cards is $100.

One card's cost is represented by equation 1, another card's cost is represented by equation 2 and the JJ Vaughn card is represented by v.

So adding the two equations and v, we get

This is the second given option.

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation: