Describe how to graph the solution of y ≤ −x2 + 2x.

 How to graph a solution, you start with the y intercept which is the 2x, you mark it on the graph, then you use rise over run  for the slope which is the -1x, so if we do rise over run is going to be -1/1. and from the y intercept point you graphed earlier you go down one square, and one over, you repeat this step.

Just copy and paste.

the correct answer is the second option

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.