Mathematics: Four times a number increased by seven must be at least 31 but at most 55. which interva represents the values of the number in this situation?

Four times a number increased by seven must be at

jdiel14

14.01.2022

6 $\leq$ x $\leq$ 8

Step-by-step explanation:

We'll represent the number with the expression 4x + 7

Then, we'll set up the inequality:

31 $\leq$ 4x + 7 $\leq$ 55

24 $\leq$ 4x $\leq$ 48

6 $\leq$ x $\leq$ 8

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soccerplayer17

16.09.2021

x= -1

Step-by-step explanation:

3(4x+2)-4x-2= -4

12x+6-4x-2= -4

12x-4x+6-2= -4

8x+4= -4

8x= -4-4

8x= -8

x= -8÷8

x=-1

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