Find the product of 2x(2x2 + 3x + 4) O 2x8 + 3x4 + 4x4
O 4x6 + 6x5 + 8x
O 4x4 + 3x5 + 2x6
3x6 + 4x5 + 5x4

Can someone me with this problem i don't understand i need

Sketch one cycle if the cosine function y=2cos2theta

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?