Answer:
125%
Step-by-step explanation:
so you are increasing by $10, and $10 is 25% of $40, so the percent change is 125%
The answer will be 12/20 also = 0.65
Answer:
(a)Attached
(b)69 degrees
(b)The ladder is safe
Step-by-step explanation:
(a)See attached diagram
The wall is length |AB| and the ladder is length |AC|
(b)

(c)Jamie wants the angle of the ladder makes with the ground to be no greater than 75 degrees for safety reasons.
Since the angle formed between the ground and the ladder (69 degrees) is less than 75 degrees, the ladder is safe the way it is positioned.
0.50c, as it's $0.50 per cup and c represents the number of cups sold. When you have a variable (letter like in this case, which is c) you always multiply.
And for 1b you're going to be doing $127.50 divided by $0.50
Let me know if this makes sense
x=1
5x+8/2=5x+4
9-4= 5
So now you have 5x=5 divide both sides by 5. And you’ll have x=1