Marcie wants to simplify this expression. which like terms can she combine?

12 - 4x + 3

a)
-4x and 3

b)
12 and 3

c)
12 and -4x

d)
12, -4x, and 3

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles. i'm desperate.

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

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.