How do find the anwser to 3x-9=7y

The cost for n students to attend a workshop is 7n + 12 dollars. What is the cost for 6 students to attend? Step-by-step

A class is made up of 8 boys and 6 girls. Half of the girls wear glasses. A student is selected at random from the class. What is the probability that the student is a girl with glasses?

an elephant can travel at a constant speed of 25 miles per hour while a giraffe can travel at a constant speed of 16 miles in 1/2 hour which animal runs faster explain your reasoning

The coldest recorded temperature at the South Pole is about - 83∘C. The warmest is about - 12∘C. The difference between the warmest and coldest recorded temperatures at the South Pole is _[blank]_∘C.

The temperature went from - 16°F to 7°F. What was the change in temperature?

Is the sequence 3,12,36, a geometric sequence? explain

Then, the bug ran from - 12 to - 100. What distance did it cover? If this run took the bug 8 minutes, what was its average speed?

68°F, 76°F, 87°F, 54°F, 87°F, 68°F, 76°F, 68°F, 87°F, 54°F Assuming that the sample was representative of the daily temperature for the entire year, what was the mean daily temperature?

A pollster obtains a list of all the residential addresses in a certain town, and uses a random number generator to choose of them.

Samantha has 6 reeses pieces. 2/3 of them are yellow. how may of samantha's reeses pieces are yellow