The formula to compute simple interest is /= prt where / is the interest earned in dollars, p is the principal invested in dollars, ris the rate at which it is invested, and t is the time in years of the investment. If Pat invests $500 at 4% for 3 years, how much interest will he earn? Select one: O $600
O $120
O $50
O $60

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec