How many solutions does this equation have?

9r − 9r = 0

Which expression is equivalent to? assume x > 0 and y > 0.

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?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).