Lilo's office store sells 5 pens for $12.50. ellis' office store sells 8 of the same pens as lilo's office store for x dollars. if the unit price is the same for both stores, what is the value of x ?

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Use sigma notation to represent the following series for 9 terms.

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.