The delivery person weights 160 lb and each box of books weights 40 lb. the maximum capacity of the elevator is 710 lb. how many boxes of books can the delivery person bring up at one time?

The number of boxes = 13

Step-by-step explanation:

Given the weight of the delivery person =160 lb

The weight of each box of books=40 lb

maximum capacity of the elevator=710 lb

Let the max number of boxes of books be x. Now the total weight of the boxes and the delivery person should not exceed the maximum capacity of the elevator.

Therefore the maximum value of x is 13(since it is an integer).

22 and 22

step-by-step explanation:

10 plus 12 equals 22.

12 plus 10 also equals 22 because regardless of what order they're in, they're gonna equal the same thing.

so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

mark brainliest!