Debby is making pizzas. she needs to choose among three bags of shredded mozzarella. one contains 8 ounces and costs $1.59. one contains 12 ounces and costs $2.49. one contains 16 ounces and costs $3.29. if debby needs 48 ounces of cheese for her pizzas, how many of which type of bag should she buy and what will be the cost?
6 of the 8 oz one
you need to buy 6 of the first to get 48 oz, and the price would be 9.54. you need 4 for the next with the price at 9.96. you need 3 for 16 oz and the price is 9.89. compare all of them and you get 9.54 as the lowest, which was the 8 oz one
$1.25x > $35
x > 28
an inequality is a type of equation where we use symbols such as greater than (> ) and less than (< ) to solve for a variable that can multiple answers. in this case, we are looking for the number of times a senior citizen must ride the bus in one month for the $35 monthly pass to be a better deal. so, the number of times the citizen rides times the cost of each bus ride must be greater than the cost of the montly pass:
$1.25x > $35, where 'x' represents the number of bus rides
if we solve for 'x' by dividing both sides by $1.25, than we know that x > 28, or that the senior citizen must ride the bus more than 28 times in the month for the monthly pass to be a better deal.
your answer is 40