Let f(x)=x^2+18y+7 and g(x)=-3x^2+2x-9. Identify the solution(s) of f(x)=g(x) i really need help i don't understand this

Avegetable garden and a surrounding path are shaped like a square together are 12 ft wide. the path is 1 feet wide. if one bag of gravel covers 8 square feet, how manu bags are needed to cover the path? round your answers to the nearest tenth.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

What is sin 7x/4 ? i need on this urgent trig