The answer to the question
Answer:
Forth term of the sequence is 61
Step-by-step explanation:
Let's just go from a1 to a4:
a1 = 5
a2 = 2x5+3 = 13
a3 = 2x13+3 = 29
a4 = 2x29+3 = 61
Answer:
x = -1/5
Step-by-step explanation:
2+3 (x+2x) = -2x(2-4) +1
Combine like terms
2+3(3x) = -2x (-2) +1
Distribute
2+9x = 4x +1
Subtract 4x from each side
2+9x-4x = 4x+1-4x
2+5x = 1
Subtract 2 from each sdie
5x = 1-2
5x = -1
Divide by 5
5x/5 = -1/5
x = -1/5
5% fail
so 100-5=95% are left
percent means parts out of 100
95% of 100 is

times 100=95
95 students are left assuming that the 5% that fail fail within 12 months