19. Michelle and Mike are both dog sitters. Michelle charges $2 per day plus a sign-up fee of
$3. Mike charges a flat rate of $3 per day. The system of linear equations below represents y,
the total amount earned in dollars for x days of dog sitting. (3 points)

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums, 28 play drums, 18 play the guitar. what is the probability that the applicant who gets the job plays drums or guitar?

Siri can type 90 words in 40 minutes about how many words would you expect her to type in 10 minutes at this rate