Step-by-step explanation:

i hope its good
Answer:
8 pounds
Step-by-step explanation:
8.75 / 3.5 = 2.5
20/2.5 = 8
Answer:
24 F
Step-by-step explanation:
Temp increases by 4F per hour.
-8F - 6F = 12F / 3hours
There are eight students. Each student is competing for 1st, 2nd, 3rd and 4th violin chair. We will use permutation to solve this problem.
When we have 'n' items and we want to find the number of ways 'k' items can be ordered. Then we use the permutation formula which states:

Therefore,

=
= 
=
= 1680
Therefore, in 1680 different ways can all four chairs be filled.
Answer:
No, she will have 140 cards in 4 months
Step-by-step explanation:
the equations is:
f(x) = 100 + 10x
now x = 4
f(4) = 100 + 10(4)
f(4) = 100 + 40
f(4) = 140
140 does not = 60