Can someone help me with this ?

What are the soultion(s) to the quadratic equation 40- x^2=0

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

Will gve pints stars and brainliest