Which of the following is the general term for the sequence \(-a,\ a^2,\ -a^3,\ a^4,\ …\)? -a(-a)^n-1
(-a)^n + 1
(-1)a^n + 1
a(-1)^n - 1

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Abcd is a square. what is the measure of angle bac

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"