Posted by Alex on Monday, November 4, 2013 at 6:43am.
Can you check #18 and explain how to do #15 please?
15. Sue ordered 4 pizzas for 6 dollars each and 2 twelve packs of coke for x amount. Use the distributive property to create an equivalent expression.
Ans: not sureseems like they're not related.
6*4=2(12x)
24 =2(12 + x)
18. One person in my class will call 3 people, and each of those people will contact 3 other people, and so on. How many people will be contacted in the 5th round? Write your answer in exponent form and find the value.
Ans: 3^5 = 243

6th grade math  Steve, Monday, November 4, 2013 at 11:44am
4*6 + 2x
or
2(6+x)
consider that at each round, if there are x people already contacted, then 3x more will be contacted, making for a total of 4x after the round. So, the sequence looks like this:
1
1+3 = 4
4+12 = 16
16+48 = 64
...
Round n: 4^(n1) + 3*4^(n1) = 4^n
So, for round 5, there are already 4^4 = 256 people, and 3*256 = 768 more will be contacted, totaling 4^5 = 1024 at the end of round 5.
Answer This Question
Related Questions
 6th grade math  Can you check my homework, please? 1. Write numeric expression ...
 Distributive property  How would I multiply these expression? 6(h4) 3(x+8) ...
 Distributive Property Algebra  I have two questions I don't understand and I ...
 Algebra I  1/2(1/2m4) Use the distributive property to write an equivalent ...
 Algebra 1  Use the distributive property to write an equivalent expression for...
 math  A.use the distributive property to write an expression that is equivalent...
 6th grade math  entify if the problem shown below is an example of the ...
 math  Use the distributive property to write an expression that is equivalent ...
 3 grade math ms sue  1Explain how you can use a number line to show that 3/6 ...
 math  equivalent expression  This is just a quick question. I need to use the ...
More Related Questions