The balance in a savings account after x years can be modeled by f(x) = 1200(1.031)x. What does the 1200 represent?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

What is (28 + 7 + 6 + 3) x 1/2 show your work

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?