Joe is using the function E = 1.89x + 2.89y to minimize his expenses when selling markers and erasers. He has the following constraints. 2x + y > 10

x + 2y > 8

x > 0

y > 0

What is the minimum value of E?
A.
$9.45

B.
$28.90

C.
$13.34

D.
$15.12

Pranza plotted point a in the coordinate plane below.

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height