How do you do unknown area problems on the coordinate plane

A busload of campers stopped at a dairy stand for ice cream. They ordered 89 cones, some soft-serve at $1.50 each and the rest hard-pack at $0.75 each. If the total bill was $90.00 , how many of each type of cone were ordered?

A boat whose speed in 15km/hr in still water goes 30 km downstream and come back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is

Simplify 3 ∙ 2x. What is the coefficient? A) 2 B) 3 C) 6 D) x

Use scientific notation to calculate the following: How many times greater is Mount Everest's highest peak than Mount Olympus's? Mount Everest - 8,849.87 meters Mount Olympus-2,919.07 meters

Alexandra and her children went into a movie theater and will buy bags of popcorn and drinks. She must buy at most 12 bags of popcorn and drinks altogether.

What contain variable, numbers, nd at least 1 operation

The data set is 7,8,10,11. How would the mean, median, and mode change if you added a 9 to the data set?

What is 81/3 minus 65/6

What is 8 1/2 divided by 5 2/3

One woman is able to buy 5 hat and 4 pairs of mittens for $30 another woman purchase 5 pairs ovens and 2 hats for 19 what are the prices