The answer is A; a=50t cause if you were to put 0, you would get 0 which is the first point, if you put in 1 you get 50, if you put in 2 you get 100 and so on.
The answer would be c because if you see closely the function is -1 and 4 March determining the perspectives and how the procedure goes
Sin 45 = 62.5/h
h = 62.5 / sin 45
h = 88.3 cm
It's A. Move the decimal to the right four places to make one the whole number, and then multiply one by ten to the negative fourth power to write it in scientific notation. If you're given a small decimal, the exponent will be negative. If you're given a large number, the exponent will be positive.