A firework is launched from the ground at a speed of 160 feet per second. Its height after t seconds is given by the polynomial -16t^2+160t. What is the height of the firework after 4 seconds?

Which expression is equivalent to 2x^2+7x+4?

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Nine more than four times a number is the same as one less than twice the number. find the number?