Answer: Four
Step-by-step explanation: There are four prime numbers between 20 and 40 and they are 23, 29, 31, 37.
If you are trying to solve for x, then
4x+5<=13
subtract both sides by 5
4x<=8
then divide both sides by 4
x<=2
Answer: x=84
Step-by-step explanation: Solve for x by simplifying both sides of the equation, then isolating the variable.
I hope this helps you out. :)
R=23 because its slope the formula is Y-Y/X-X