Avan travels 320 miles on 16 gallons of gas. find how many gallons the van needs to travel 420 miles

Tracy solved the following problem. which of the statements is true? 9 ÷ 3 + 6 × 2 3 + 6 × 2 9 × 2 18 her answer is correct. her answer is incorrect. she should have multiplied before dividing. her answer is incorrect. she should have multiplied before adding. her answer is incorrect. she should have added before dividing.

What properties allow transformation to be used as a problem solving tool

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9