A cubic foot of concrete weighs approximately 150 pounds. How many pounds will a similar block of concrete weigh if the edges are twice as long

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

If a line is defined by the equation y = 5x + 2, what is the slope?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read