Given The recourse recursive formula, find the first four terms:

c

Step-by-step explanation:

we are given that

we are already given our first term i.e 45

for second term

simplify substraction:

since we have

substitute:

simplify multiplication:

for third term

simplify Substraction:

as

substitute:

simplify multiplication:

for forth term

simplify Substraction:

substitute:

simplify multiplication:

hence,

the first four terms are 45,-135,405,-1215

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.