Tickets for a dance were $12 for students and $25 for non-students. Altogether 150 people attended the dance and $2450 was collected from the sales of tickets. How many students were at the dance?

Solve the system of equations. y= 2x y= x^2 - 15

Evaluate 3(a + b + c)squared for a = 2, b = 3, and c = 4. a. 54 b. 243 c.729 add solution .

Formulate the indicated conclusion in nontechnical terms. be sure to address the original claim. the foundation chair for a hospital claims that the mean number of filled overnight beds is over 523, and she is therefore justified starting a funding campaign to add a wing to the hospital. assuming that a hypothesis test has been conducted and that the conclusion is failure to reject the null hypothesis, state the conclusion in nontechnical terms.