Hello,
Yes of course 0.4 or 4/10 is a rational number :)
Have a nice day :)
One question at a time, please. I will focus on #16 and ignore #18.
slope: 3/4 line passes thru (-8,2)
Write out y = mx + b. Subst. 2 for y. Subst. -8 for x Subst. (3/4) for m:
2 = (3/4)(-8) + b. Find b. 2 = -6 + b => b = 8
So your equation is y = (3/4)x + 8. Please, use ( ) around those fractions!
The answer is A. this is because your are multiplying by 9 throughout
16 bc one side is 5ft so the other must be 3 to have an area of 15. Then 5+5+3+3= 16ft
