What is the explicit rule for the geometric sequence? 4.05, 1.35, 0.45, 0.15, 
an=4.05(13)n−1
an=4.05(13)n+2
an=4.05(13)n
an=4.05(13)n+1

1. are the triangles similar and if so why? what is the value of x? show your work.

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.