Niah earns $7.25 per hour at her part-time job that she works at 18 hours per week. to earn some extra money, niah her friend out with her dog walking service. it is possible to walk more than one dog at a time, and niah’s friend pays her $9 per dog for each half hour walked. niah walks dogs on 3 different days this week, as listed below. what is the total amount of earnings niah had this week?

monday: 3 dogs for 0.5 hours
wednesday: 2 dogs for 0.5 hours and 1 dog for 0.5 hours
thursday: 2 dogs for 1 hour
a.
$175.50
b.
$195.75
c.
$202.50
d.
$220.50

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

The sales tax rate is 7.25%. how much tax in dollars is added on an item that costs $56.00? a. $4.06 b. $7.25 c. $14.50 d. $60.06

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?