The amount (y) (in grams) of the radioactive isotope phosphorus-32 remaining after (t) days is y=a(0.5)^t/7 , where (a) is the initial amount (in grams). What percent of the phosphorus-32 decays each day? Round your answer to the nearest hundredth of a percent.

You put $2000 in an account with a simple interest rate of 1.5%. how long does it take for the account to earn $60?

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.