Algebra 1

posted by .

So I have this problem:

Dave can vote. (18 or over.) Dave is 5 years older than Jim. Jim is not old enough to vote. Write a mathematical inequality expressing Dave's age. (Hint: determine Dave's maximum and minimum age.)

So I have his minimum age as 18 and his maximum age as 22. That's how old he can be while the other is too young to vote. But how do I write the inequality?

  • Algebra 1 -

    let J=Jim's age
    let D=Dave's age
    It is given that Dave can vote.
    So
    D>=18
    Dave is 5 years older
    J+5=D
    or
    J=D-5
    Jim can't vote.
    J<18
    Substitute for Jim's age:
    D-5<18
    Solve this for the upper limit for Dave's age.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. 4 grade

    During a hike, Sally and Dave collected 160 acorns. Sally collected 3 times as many acorns as Dave. How many acorns did Dave collect?
  2. college

    Adam, Bill, Chris, and Dave each own one quarter of a company. Bill sells 2/3 of his shares to Dave. Adam sells 3/5 of his shares to Chris and the rest to Dave. How much of the company does Dave own now?
  3. Math

    Adam, Bill, Chris, and Dave each own one quarter of a company. Bill sells 2/3 of his shares to Dave. Adam sells 3/5 of his shares to Chris and the rest to Dave. How much of the company does Dave own now?
  4. Finance

    Both Bond Sam and Bond Dave have 9 percent coupons, make semiannual payments, and are priced at par value. Bond Sam has 3 years to maturity, wheareas Bond Dave has 20 years to maturity. If interest rates suddenly rise by 2 percent, …
  5. math

    Pick a Card. Mike and dave play the following card game. Mike picks a card from the deck If he selects a heart Dave gives him $5, if not, he gives Dave $2. Determine Mikes's expectation. Determine Daves' expectation Can you help me …
  6. math

    dave has a rabbit, a ferret,a gerbil and a turtle. He feeds them in a different order each day. In how many different orders can dave feed his pets. Make an organized list to solve each problem. Write each answer in a complete sentence …
  7. chattco

    Dave's age in 4 years is 18. Write an equation that represents Dave's age in 4 years. Use the variable, d, to represent Dave's age
  8. Macroeconomics

    Dave is buying pizza and soda. Suppose that a slice of pizza and a can of soda each cost $4 Let E be the amount in dollars that Dave spends on pizza and soda. If Dave buys P slices and S cans of soda, which one of the following equations …
  9. algebra

    Please write an equation for the following problem. : dave sells popcorn at the ballpark. He is paid a flat rate of $40 each day but, also earns $0.45 for each box of popcorn he sells. Dave earns a total of $112 at wednesday nights …
  10. Algebra

    The sum of the ages of Dave and Ted is 48. Eight years from now, Ted will be 3x Dave's age. Find their present age.

More Similar Questions