Sam's driving test has 15 questions and he got 13 correct. schuler's driving test only has 12 questions and she got 10 correct. who had the better average

Sam had the better score

To compare their scores we require to convert them into percentages

Express as a fraction and multiply by 100%

× 100% = 86.7% ( to 1 dec. place )

× 100% = 83.3% ( to 1 dec. place )

how many players are there?

step-by-step explanation:

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.