Why are 1966 pennies worth almost $20?

Can someone me and plz do the problem

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

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.