Question

The students of a school went on a picnic by bus. The number of students in each of x buses was the same. The number of rows of seats in each bus was 1 more than the number of buses. The number of students who sat on each row of seats was 2 more than the number of rows of seats in each bus. The expression below shows the total number of students in all the buses:

x(x + 1)(x + 3)

How can the total number of rows of seats in all the buses combined be calculated

Answer 1

answer choices

By multiplying x and (x + 1)

By multiplying x and (x + 3)

By adding (x + 1) and (x + 3)

By adding (x + 1) and (x + 2)

Answer 2

@jim_thompson5910 can you please help?

Answer 3

how far did you get?

Answer 4

I don't know where to begin.. but I read the problem and I'm thinking it's the 1st answer. @jim_thompson5910

Answer 5

why the first one?

Answer 6

There are x buses.
The number of rows in a bus is 1 more than the number of buses. now i'm not so sure :/ @jim_thompson5910

Answer 7

yep, there are x buses

Answer 8

how many seats does one bus have?

Answer 9

This is confusing... like i'm lost @jim_thompson5910

Answer 10

"The number of rows in a bus is 1 more than the number of buses"

there are x buses

so there are ______ seats in one bus

Answer 11

I know it's the first answer but I can't necessarily explain it. but when you multiply x(x+1) you get x^2+1 . @jim_thompson5910

Answer 12

we have x buses

each bus has x+1 seats

so there are x*(x+1) seats total when you add up all the seats in the x buses

Answer 13

that's what I was going for

Answer 14

and x*(x+1) = x^2 + 1 is false

it should be x*(x+1) = x^2 + x

Answer 15

you have to distribute that x through to ALL of the terms inside

Answer 16

Ooh ok. but I just put the 1 instead of x. my mistake @jim_thompson5910