Is the equation true, false, or open?

9p+8=10p+7

a. open; there is a variable
b. true; the expressions are the same for all values of the variables
c. false; the expressions are never the same

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

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?