A plumber charges $70 per hour plus $40 for the call. What does he charge for 4 hours of work? Use x to represent the hours of work.

If every student is independently late with probability 10%, find the probability that in a class of 30 students: a) nobody is late, 4.2% 8.0% 17.4% 33.3% unanswered b) exactly 1 student is late. 3.33% 5.25% 7.75% 14.1%

What is the degree of the polynomial? 4m the the 2nd power - 3m to the 6th power + 5m to the 4th power

The length of a rectangle is 3 meters less than twice the width if the area is 104 square meters find the length

As shown, a section of a roller coaster track (figure 3) follows the form of y = (2/3) x1.5. locate the centroid x? of the track between x=0 m and x=3.5m

Factor completely 2x^2 - 6x - 56.

The expression 32-48 factored using the GCF is .

A guy walks in the store and steals 100 without the owners knowledge. He comes back 5 minutes later and buys 70 dollars worth of goods with the 100 dollar bill. The owner gives him back 30 in change

The probability of a randomly selected car crashing during a year in a certain country is 0.04780.0478. if a family has three three? cars, find the probability that at least one of them has a car crash during a year.

1/2n-17/12=2/3n-13/6

Every day two sisters eat the same number of gluten-free rice cakes. Susanna eats 4/5 of a rice cake. Melanie eats 2/3 of a rice cake. How many rice cakes do they eat in one day?