Profit, P(x), is the difference between revenue, R(x), and cost, C(x), so P(x) = R(x) – C(x). Which expression represents P(x), if R(x) = 2x4 – 3x3 + 2x 1 and Cx) = x4 – x2 + 2x + 3?
x4 – 3x3 + x2 – 4
3x4 – 3x3 – x2 + 4x + 2
x4 – 3x3 – x2 + 4x + 2
2x8 – 3x3 + x2 – 4 .

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.