Rate for Sally is 1 room per 8hrs
rate for Steve is 1 room per 7hrs
combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min
Explanation is in a file
bit.
ly/3a8Nt8n
I'm assuming you want to work out the monthly payment. So:-
12x + 25 = 193 where x = monthly payment
12x = 193 - 25 = 168
x = 168/12
= $14 Answer
Answer:12x-15
Step-by-step explanation:2x+5(2x-3)
2x+10x-15
12x-15
Answer:
Step-by-step explanation:
mean=(88+72+85+76)/4=321/4=80.25
x |x-mean|
88 7.75 (88-80.25)
72 8.25 (80.25-72)
85 4.75 (85-80.25)
76 4.25 (80.25-76)
--------
25.00
______
mean absolute deviation=25/4=6.25
