A class of 40 students took a math test. 18 of the students had a weighted average of 80. the other students had a weighted average of 70. what is the average score of the whole class?

Daniel earns money mowing lawns. He charges $4.50 per lawn. How many lines must he mow to earn $45?

8. Solve using any method. 3y - 3 = 3x -3x + 3y = - 57

F (x) = 600x + 1200 where x is number of cars sold give the domain and range

a model doll house is 3.25 feet long. the real house is 30 yards long. what is the unit rate that describes the relationship of the real house to the model doll house?

Darren wins a coupon for $4 off the lunch special for each of 5 days he pays $75 for his 5 lunch specials. write and solve and equation to find the original price p for one lunch special

Is 9/12. Bigger than 3/4?

What is 7 2/5 - 5 2/3

Myron has about 179 postcards he says he has about 200 cards did he round to the nearest 10 or nearest hundred explain

A food processor packages orange juice in small jars. The weights of the filled jars are approximately normally distributed with a mean of 10.5 ounces and a standard deviation of 0.3 ounce.

If f (x) = 7x-5, find f-| (16) ?