For how many integer values of n will the value of the expression 4n + 7 be an integer greater than ...

For how many integer values of n will the value of the expression 4n + 7 be an integer greater than 1 and less than 40?

Quiz

Answer/Solution

10

Steps/Work

4n+7 > 1
4n> -6
n > -(3/2)
n> -1.5 (n = -1, 0, 1 ,2 3........ upto infinity)
From second constraint
4n+7 < 40
4n< 33
n < 8. 25
n = (-infinity, .......-3, -2, -1, 0, 1, 2, .........upto 8)
Combining the two
-1.5 < n<8.25
n = 1 to 8 (48 integers)
and n = -1 and 0
so 10 integers.
A

General Calculator / Auto Solver

For how many integer values of n will the value of the expression n + be an integer greater than and less than ?

Calculated Answer

10

Step by Step Solution

In order to solve problem, you must evaluate floor((n3 - n1) / n0) - floor((n2 - n1) / n0).

n0 =4
n1 =7
n2 =1
n3 =40