If a quadratic function has an a value of 1, and a vertex of (-1, 4), what is the function? I NEED HELP

Tell me how you got the it use the figures to answer questions 1and 2. in each diagram, line k is parallel to line l, and line t intersects lines. 1. based on the diagrams, what is the value of x? 2. how would you verify your answer for x?

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students