Math
posted by Bethany
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?

Bethany
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.? 
Steve
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. 
Brenda
Oo I see! ThanksSteve! Could you Lso hep me with the questions above?
Respond to this Question
Similar Questions

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? 
math
how knowing the number of pennies in one jar can help you estimate the number of pennies in a second jar that is four times as large. give me an example. 
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 
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? 
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 pennies. … 
algebra 2
if someone offers to pay you 1 penny on the first day, 2 pennies on the second day, 4 pennies on the third day, 8 pennies on the fourth day, 16 pennies on the fifth day ad so on. What is the first day on which your pay would be at … 
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? 
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 … 
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 the … 
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 day …