I'm sorry, but I'm a bit confused on what you're trying to ask. Could you please clarify?
Answer:
$3.68
Step-by-step explanation:
An acute angle is infact 90 degrees, therefore your answer is correct.
Answer:

Here,
denotes the required number.
Step-by-step explanation:
Let
denotes the required number that satisfies the following condition.
''seven times a number is less than or equal to a quantity that is 24 less than that same number''
Seven times a number is equal to 
Quantity that is 24 less than that same number is equal to 
Now find the inequality.
As seven times a number is less than or equal to a quantity that is 24 less than that same number,

Answer:
slope=3
Step-by-step explanation: