Suppose that David Letterman and Paul Shaffer have the same amount of money in their pockets (say $100 each). How much must Dave give to Paul so that Paul will have $10 more than Dave?

$10

Step-by-step explanation:

Let the amount of money by each be .

-At amount, the two have the same amount. For Paul to have $10 than Dave, his total amount has to be .

-Hence, Dave has to give Paul $10 for Paul to have $10 more than him.

Option C -

Step-by-step explanation:

Given : The Jones family plans a trip to the amusement park a purchase a family package for $128.00. They also want to buy lunch and souvenir cups. The chicken platter costs $8.50 each and the burger platter costs $9.50 each. The souvenir cups each cost $10.00

To find : Which of the following algebraic expressions can be used to describe the amount of money the Jones family will spend, before sales tax, based on the number of each meal and souvenir cups purchased?

Solution :

Let x represent the number of chicken platters.

Let y represents the number of burger platters.

Let z represent the number of souvenir cups.

A family package cost is $128.00.

The chicken platter costs $8.50 each

The cost of x chicken platter =

The burger platter costs $9.50 each.

The cost of y burger platter =

The souvenir cups each cost $10.00

The cost of z souvenir cups  =

Therefore, Total they spend is

Hence, Option C is correct.