I need help <3 <3 < 3 <3 <3 <3 <3 <3 <3 <3

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

What is this inequality notation? t is less then or equal to 2

Find the maximum value of p= 4x + 5y subject to the following constraints :