A city charges a 25% yearly interest rate for late tax payments. The equation represents the total amount of tax and interest on an original tax amount of $1,600 after late weeks. What is the value of b rounded to four decimal places?

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b