Find the average value:
40 minutes + 50 minutes = 90 minutes
90 minutes/2 = 45 minutes
Together it will take them 45 minutes to clean the house
Just take it in co-ordinate pairs
Take two points
Slope:-




Equation of line in point slope form




- Convert to slope intercept form y=mx+b

Graph attached
cape town as its average low is 60.3 f
24/40 = T/30
40t= 24•(30)
T= 18
Hope this helps. :)
Answer: 20
1) simplify 2^2 to 4
4*5
2) simplify
20