The scale of a map says that 4 cm represents 5 km. What is the actual number of kilometers that is represented by 5 centimeters on the map? (only write the number as your answer)

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

We just started the introduction into circles and i have no idea how to do this.

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x