The following table shows the length and width of two rectangles:

length width
rectangle a 3x + 2 2x - 1
rectangle b x + 5 5x - 1

which expression is the result of the perimeter of rectangle b minus the perimeter of rectangle a?
2x + 2
2x + 6
22x + 14
22x + 18

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.

What is the area of the trapezoid shown