Step-by-step explanation:
-3(2x-6)+4=-6x+18+4=-6x+22
If 30% of his collection is 12 cars, then we can use the fraction
30/12=100/x
x=40
There would be 8 ones, 4 fives, 12 tens, and 4 twenties. That together would be about $228
Answer:a) 870
b) 435
Step-by-step explanation:
a)
number of photos to be posted =n = 30
number of web pages on which they would be posted is 2
Since the order in which the photos appear on the web pages matters,
Number of ways = 30 permutation 2
=870 ways
b)
Since the order in which the photos appear on the web pages does not matter,
Number of ways = 30 combination 2
= 435 ways
