If N is an even number, which of the following is always odd. A=N/2 +1 B=N/2+2 C=N/2+3 D=None of these

If square root x = -7, then x= -49 true or false

Factor the polynomial expression x6 – x3 – 20

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?