How can we use exponents to represent powers of ten

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

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.

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55