Using radians, find the amplitude and period of each function.

1) y= 1/2 *cos 2θ + 1

2) y= 1/9 *sin 4θ + 5

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

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?