I think it is (0,b). Though I might be mistaken. After you plug in the numbers, it should be -3a+3a/2 and b+b/2. Once simplified that is 0/2 and 2b/2. 0/2 is just 0 and 2/2 is 1 leaving b. So the answer is (0,b).
The length is 2
Explanation: there are 2 boxes of the graph between d and c
Hope this helps
#2 i got 3.05 ft because 1/100 of 305 is 3.05
When you multiply/divide by a negative number while solving the inequality, you reverse the symbol.
A.) 4(5 - y) ≥ 80 To solve this, isolate/get the variable "y" by itself in the inequality. Divide 4 on both sides

5 - y ≥ 20 Subtract 5 on both sides
5 - 5 - y ≥ 20 - 5
-y ≥ 15 Divide -1 on both sides to get "y" by itself
Because you are dividing by a negative number, you need to reverse the sign
y ≤ -15
B.) 2(y - 3) ≥ 8 Isolate "y", divide 2 on both sides
y - 3 ≥ 4 Add 3 on both sides to get "y" by itself
y ≥ 7
C.) 3y - 4 > 1 Add 4 on both sides
3y > 1 Divide 3 on both sides to get "y" by itself

D.)
Isolate "y", add 3/4 on both sides
6y > 1 Divide 6 on both sides to get "y" by itseld

Step-by-step explanation:
By 2 point form
y-y1= m(x-x1)
y-2 = -3(x-1)
y-2=-3x+3
3x+y=5... this is the required line