For what values of a is 1/a an integer?
a) when a is an integer
b) when a is a positive number
c) when a is greater than 0 and less than 1
d) when a is greater than 0

The function models the number of accidents per 50 million miles driven as a function

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.