Which expression correctly represents “twice the sum of four and a number”?
2 (4 + n)
2 (4 n)
2 (4) + n
2 + (4 n)

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

If a translation of t-3,-8(x, y) is applied to square abcd what is the y-coordinate of b'? the y-coordinate of is 43 mark this and return save and exit next submit

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.