What is the total to 2016 minus 1978

a.38
b.56
c.84
d.11

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?