I have to select all the expressions that are equivalent to the factored form of: 36a-16. the answers are 4(9a-4), 2(18a-8), 6(6a-3), 3(12a-16) and 30a-10. please help!​

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?

Anyone know? will mark brainliest if you're correct!

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)