The grades on the last history exam had a mean of 75%. Assume the population of grades on history exams is known to be normally distributed with a standard deviation of 7. What percent of students earn a score between 70% and 82%?

Snorkel and two friends rented three life jackets and a sailboat. The life jackets were $3 each and the boat was $12 an hour. The total cost was $93. For how many hours did they rent the sailboat? (I need an equation along with the answer.)

A car puchased for $12,000 depreciates under a straight-line method in the amount of $850 each year. Which equation below best models this depreciation? A) y = 12000x + 850 B) y = 12000 + 850x C) y = 12000x - 850 D) y = 12000 - 850x

A bag contains 6 red tiles and 5 yellow tiles. Another bag contains 8 red tiles and 2 yellow tiles. A token is removed from each bag. What is the probability that both tiles are yellow?

Use your knowledge of transformations to find the matching graph. Ax) = 2x/x+1 DONE Intro

A rope was 9.45 meters long. it was cut into 3 pieces. the length of the first piece of rope was 1/5 of the original length. the second piece of rope was 0.12 meter longer than the third piece. how long was the second piece of rope

Chaz rides 1/3 mile every 1/6 hour. How far does he ride in 1 hour?

X times x + 3 to the power of 2 equals 48, what is x?

a rental car agency charges 190 per a week plus. 25 per mile to rent a car. How many miles can you travel in one week for 370

How do you factorise 7x + 29

A round swimming pool has a radius of 12 feet. What is it's circumference