Selena is driving to visit her grandmother who lives 325 miles away from selena home. she travels an average of 60 miles per hour. determine the independent and dependent quantities in each scenario. be sure to include the appropriate units of measure for each quantity

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?