What the reciprocal of 5/8 in fractions

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.

Tanyss's house has 25 windows. her brother has washed 22 of the windows. what percent of the windows has her brother washed?

What is the equation of the parabola with focus (-1,-1) and directrix y=1?