A parabola with equation y=x^2+bx+c passes through the points (-1,-11) and (3,17). What is c?

Please do not post a blank answer.

I promise I'll mark you brainliest if you solve this :)

Which expression is equivalent to 2x^2+7x+4?

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

Lucy and donavan measured the length of the school garden. lucys measurement is 11.3m and donavans measurement is 113 cm. could both be correct? explain