(5x-2)+(3x+4)+90=180 find x

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?

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

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