What polynomial must be added to x- 2x +6 so that the sum is 3x + 7x ? O 4x2+ 5x + 6
O 3x+ 9x + 6
O 3x2+ 9x - 6
O 2x+ 9x - 6
O 2x- 5x +6

Use the graph of the sine function y=2sinθ shown below

The brain volumes (cm cubed) of 50 brains vary from a low of 904 cm cubed to a high of 1488 cm cubed. use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 175.5 cm cubed, assuming the estimate is accurate if it is within 15 cm cubed

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.