What’s 1+1? and whats is 2 divided by 20

Chose the graph below that represents the following system of inequality’s

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Which of the following are arithmetic sequences? check all that apply. a. 0.3, 0.6, 0.9, 1.2, 1.5, b. 2, 3, 6, 11, 18, c. 150, 147, 144, 142, d. 2, 4, 9, 16, 25,