A jeweler knows that if they price jade rings at $60, they will sell 120 each day. For each decrease of $2, five additional
sales will be made. This means the jeweler's revenue can
be modeled by the formula R = (60 – 2x)(120 + 5x),
where x is the number of $2 decreases. Multiply out the
binomials and use a table of values to determine what
price will give the most revenue.

How many zeros does the function f(x)=4x3-x2+1 have

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.

Plz hurry evaluate the expression a+b where a=8 and b=19