Which shows the expression below simplified?
0.06 - (2.8 × 10-5)
a.
3.2 × 10-2
b.
2.74 × 10-5
c.
5.9972 × 10-2
d.
5.9972 × 10-5

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.