Math

1. Daniel wants to save at least 20 dollars by putting pennies in a jar daily. On first day, he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he pus n pennies into the same jar. Which day is the first day on which he has at least 20 dollars in thejar? (1 dollar=100 pennies) a. 60 b. 61 c. 62 d. 63 e. 64
I tried the sum equation but I got 1334 which is no one of the choices.

2. The first term of a sequence is 12, and each term after the first is 2 less than the preceding term. If n is a positive integer, which of the following could be the sum of the first n terms of the sequence? a. -14 b. -2 c. 28 d. 31 e. 81

3. "123...91011...3" If the positive integers(to the left) are written one after another as shown until the eighth occurence of the digit 3, how many digits are in the number? a. 29 b. 33 c. 39 d. 48 e. 57

4. Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars than the amount he put in on the previous day. After 10 days he has put 200 dollars in the jar. How much money did he pit in the jar on the first day?

asked by Bethany
  1. 5. The sum of 4 consecutive odd integers is 48. What is th largest of the four integers?
    How do you set up this kind of consecutive equation when using x, x+2, x+4 etc.?

    posted by Bethany
  2. if the first odd integer is 2k+1, then the others are 2k+3,2k+5,2k+7

    So, adding them up you get 8k+16=48
    k=4.
    the numbers are 9,11,13,15

    Your idea is also good, but to guarantee odd numbers, you need even numbers+1. In some situations you might get a solution for x but find that x is not odd.

    posted by Steve
  3. Oo I see! ThanksSteve! Could you Lso hep me with the questions above?

    posted by Brenda

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Math

    1. Daniel wants to save at least 20 dollars by putting pennies in a jar daily. On first day, he puts one penny into the jar. The second day he puts 2 pennies into the same jar. On the nth day he pus n pennies into the same jar.
  2. Math Help!

    I apologize for all these questions but I really need to get them done fast so I appreciate if you tried to answer some of them! 1. Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every
  3. Math Qs. Check!!!!!!

    Jake puts pennies into a jar each morning and lets his brother take haft of the pennies out each morning. Jake put 10 pennies into the empty jar on Monday morning. On Tuesday he put in 15 pennies. One Wednesday he put in 12
  4. Math

    Bill is saving money in an empty jar. The first day he puts in a certain amount of money. Every day after the first he puts in 2 more dollars than the amount he put in on the previous day. After 10 days he has put 200 dollars in
  5. math

    A jar contains 120 pennies. A bigger jar contains 1 1/4 times ss many pennies. What is the value of the pennies in the jar?
  6. 3rd grade

    Mr Samuel has 150 pennies in two jars. There are 40 more pennies in one jar than in the other. How many pennies are in each jar?
  7. math

    Mr. Samuel has a 150 pennies in two jars there are 40 more pennies in one jar than the other, how many pennies are in each jar
  8. math

    Mr. Samuel has 150 pennies in two jars. There are 40 more pennies in one jar than the other. How many pennies are in each jar?
  9. math

    A jar contains 133 pennies. A bigger jar contains 1 2/7 times as many pennies. What is the value of the pennies in the bigger jar
  10. Math

    There are 100 coins in a jar and 10 are dimes. The rest are pennies and nickles. There are twice as many pennies as nickels. How many pennies and nickles are in the jar?

More Similar Questions