FREE POINTS pls help me ASAP with this go to [ sheet 3] and help meh with 1, 2 , 3 , 4 , 5 , 6 ASAP :( [explain-answer]

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?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?