Answer:
permutation is the correct one.
Reason: combination are used to calculate the number of possible selections of objects without regard to the order selected. "My fruit salad is a combination of apples, grapes, and bananas". No matter the order, it is still a fruit salad. - The friends cannot be repeated twice so it is not combination
Answer:
5
Step-by-step explanation:
it is the only non-multiple of 3 and 4
You can think of a 20% discount as only 80% of the original cost or:
Cost = 0.80x
Hello,





I don't know what i have to do for the last one.
Hope this helps !
Photon
Answer:
3n - 4
Step-by-step explanation:
for "four less than three times a number" meaning you subtract 4 from the product of 3 and the unknown number.