30 divided by(-10) can you please tell me the answers i am failing math and i really need help so i don't want to fail

What are the domain and range of the functiony = 2(x - 3)2 + 4?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *