Write the quadratic function in the form g(x)=a(x-h)^2+k.
then, give the vertex of its graph. g(x)= -x^2+2x-5
writing in the form specified : g(x):
vertex :

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

Can someone answer this question? : )

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?