428,005,197 in expanded notation

4*100,000,000 = 4

2*10,000,000 = 2

8*1,000,000 = 8

5*1,000 = 5

1*100 = 1

9*10 = 9

7*1 = 7

428,005,197

Step-by-step explanation:

Move the decimal so there is one non zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Hope this helps

10/60

step-by-step explanation:

if you divide 10 by 60 the answer is 0.166666 while if you divide or solve the other problems it equals 0.6

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)