Define your variables and write a system of equations to answer the question. (4 pts cach) 4. Bella and Sierra both decided to have their birthday parties at A amusement park because the birthday
girl gets in for free! Isabella had 15 friends and 4 adults
and the total cost was $390. Sierra had 11
friends and 2 adults for a total cost of $272. What was the price for each friend? For each adult?
How do you answer this

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.