Nandini uses a code to open a security door. The code is a letter followed by a 2-digit number.
The letter is P or Q.
The number is a prime number between 30 and 40
Write down all the possibilities for Nandini's code.

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?