Answer:
8 hours.
Step-by-step explanation:
let x represent number of hours.
We have been given that Trey mechanic will fix Trey's car at a rate of $20 per hour, plus $400 for the cost of a part.
So total cost of repairing a car for x hours by Trey mechanic would be 
.
We are also told that the neighbor has the needed part and will fix the car for only $70 per hour. So total cost of repairing a car for x hours by neighbor would be 
.
To find the number of hours, when the cost of fixing the car by either person will be equal, we need to equate both expressions as:
Let us solve for x.
Therefore, after 8 hours the cost of having the car fixed by either person will be the same.
Answer:
The equations describing the area which each tower covers are given as
Tower A : 
Tower B : 
Tower C : 
Step-by-step solution:
Cell phone radio towers broadcast a cell phone signal in circular pattern
Tower A at Adele Acres have position co-ordinates as (0,0) and a coverage radius of 4 ml. So, the area which it covers is given by the equation,
-------------------------------(1)
Tower B at Brown Lake have position co-ordinates as (5,4) and a coverage radius of 3 ml. So, the area which it covers is given by the equation,
-------------------------------(2)
Tower C at Cady City have position co-ordinates as (4,-4) and a coverage radius of 5 ml. So, the area which it covers is given by the equation,
-------------------------------(2)
There are 28 squares in the box. Hope this helps you
Answer:
11) A
12) B
13) C
14) D
Step-by-step explanation:
11) 4 times left, 1 up
12) 4 times right, 4 up
13) 1 time left, 1 down
14) 2 times left, 2 up
Answer: 1102 minutes
Explanation: Let x be the number of minutes Jim used 105.60 = 75 + 0.30 ( x − 1000 ) ⇒ 105.60 = 75 + 0.30 x − 300 ⇒ 105.60 = 0.30 x − 225
