Find 2(cos 240+isin 240) ^4 (answer choices below)

Could someone with number 1 and 2

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss