Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable d dd models Rachel's distance from her exit (in meters) t tt seconds after the cameras began recording the stunt. D=38t+220 What is Rachel's speed?

Tomas is making trail mix using granola and walnuts. he can spend a total of $12 on the ingredients. he buys 3 pounds of granola that costs $2.00 per pound. the walnuts cost $6 per pound. he uses the equation to represent the total cost, where x represents the number of pounds of granola and y represents the number of pounds of walnuts. he solves the equation for y, the number of pounds of walnuts he can buy. answer- b tomas added 6 to both sides of the equation instead of subtracting 6. just took the test

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Yesterday i ran 5 miles. today, i ran 3.7 miles. did my percent increase, decrease or is it a percent error? plz i need