Hey yo can anyone solve 8.49 * 10^-2 plz?

How do you find the area of a triangle

41/17 as a decimal rounded to the nearest hundredth

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.