Your brother is driving 40 km/hour when he slams on his brakes to avoid hitting a dog crossing the road. if it takes him 5 seconds to stop, what is his
rate of acceleration?

A. 8 km/hr/sec

B. 40 km/hr/sec

C. 45 km/hr/sec

D.200 km/hr/sec

Ivan and jeff buy a package of 8 pens for $4.00. ivan wants 5 of the pens, and jeff wants 3.how much should each student pay?

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.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4