Use rounding to estimate.

1. 2.34 + 1.9 + 5.23
2. 10.39 - 4.28

Could someone with number 1 and 2

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount