Suppose that y is directly proportional to x and that y = 10 when x = 3. complete parts (a) and (b). (a) find the constant of proportionality k. (b) use y = kx to find y when x = 6.

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

26) -2(7x) = (-2 • 7) x a. associative property of addition b. associative property of multiplication c. commutative property of multiplication d. commutative property of addition