Solve each
5x+7>-8
minus 7 both sides
5x>-15
divide by 5
x>-3
3x+7≤19
minus 7 both sides
3x≤12
divide by 3
x≤4
so we got
x>-3 AND x≤4
and means that the solution set must satisfy both at once
so x is bigger than -3 and less than or equal to 4
so between -3 and 4 including 4
-3<x≤4
last one
Answer:
Each pen costed $5.
Step-by-step explanation:
Simple, the coefficient (5) is the cost for one of the pens & the x is the amount of pens bought.
Hope this helped & please give me the brainliest if it did!
Answer:
(3,1)
Step-by-step explanation:
Answer:
12 units
Step-by-step explanation:
Each side of the triangle is 1 unit. When putting 10 triangles together in figure 10, there will be 12 sides on the perimeter. Therefore, your answer is 12 units.
Answer:
All real numbers less than 
Step-by-step explanation:
we have
Adds 
both sides
Divide by 
both sides
the solution is the interval ---------> (-∞,6)
All real numbers less than
see the attached figure to better understand the problem
