2. What answer represents this number in scientific notation?

0.00000916

a. 916 x 10^-8
b. 9.16 x 10^-6
c. 916 x 10^8
d. 9.16 x 10^6

3. What is this number in standard form?
6.8 x 10^-4

a. 5,750,000,000
b. 575,000,000,000
c. 0.00000000575
d. 0.575000000000

5. What is this number in standard form?
5.2 x 10^8

a. 0.000000052
b. 0.0000000052
c. 520,000,000
d. 5,200,000,000

To convert a number to scientific notation, you need to move the decimal point to the right or left until there is only one non-zero digit to the left of the decimal point. Then, count the number of places you moved the decimal point and use that as the exponent of 10.

2. To convert 0.00000916 to scientific notation, we need to move the decimal point 5 places to the right. This gives us 9.16 with one non-zero digit to the left of the decimal point. Therefore, the answer in scientific notation is b. 9.16 x 10^-6.

3. To convert 6.8 x 10^-4 to standard form, we need to move the decimal point 4 places to the left. This gives us 0.00068. Therefore, the answer in standard form is c. 0.00000000575.

5. To convert 5.2 x 10^8 to standard form, we need to move the decimal point 8 places to the right. This gives us 520,000,000. Therefore, the answer in standard form is c. 520,000,000.