What is a science notation of 5 + 10 to the 4th power why do you get this answer

Write a fraction less than 1, which has a denominator of 6 and is greater than 3/4 plz answer !

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

Solve the equation.then check your solution 8=1.88+a