Find the value of x for which (4/5)-4 X(4/5)-7 = (4/5)2x-1

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way