By rounding each number to 1sf estimate the answer to 236 x 75

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Does the point (1, sqrt 7) lie on circle shown.

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i