Cara used the order of operations to evaluate the expression below what was caras first error cara did not evaluate 7-13
cara did not evaluate -4²
cara subtracted 2 from 6 incorrectly
cara multiplied 2 and 4 incorrectly

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?

Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !