In 2014, country X had 783 miles of paved roads. starting in 2015, the country has been building 8 miles of new paved roads each year. at this rate how many miles of paved road will country X have in 2030? (assume that no paved roads go out of service.)

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Average acceleration: i have no idea how to do this.