Of the following options, what could be a possible first step in solving the equation −7x − 5 = x + 3?

adding 7x to both sides of the equation
subtracting 5 from both sides of the equation
adding x to both sides of the equation
combining like terms, −7x + x = − 6x

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

Atriangular field has sides of lengths 21, 39, and 41 yd. find the largest angle. (round your answer to the nearest degree.)