Gina is having a party and wants to spend less than $490. She has already spent $400. The only item left on her list is pizzas, which cost $10 each. How many pizzas, x, can she purchase and stay under her budget? Select the inequality that includes the largest number of pizzas she can purchase and still stay under her budget.
A. x < 80
B. x < 40
C. x < 49
D. x < 9
Gina has already spent $400 and wants to spend less than $490 in total.
If the cost per pizza is $10, she can purchase x number of pizzas.
The total cost of the pizzas will be 10x.
To stay under her budget, the inequality is: 10x + 400 < 490
Subtracting 400 from both sides of the inequality, we get: 10x < 90
Dividing both sides of the inequality by 10, we get: x < 9
Therefore, the inequality that includes the largest number of pizzas she can purchase and still stay under her budget is D. x < 9.