ACTIVITY RESULTS Select the letter of the correct answer.
In traffic lights, LED bulbs use about 90% less energy than incandescent bulbs. Let's say that
an incandescent bulb uses 240 units of energy. If this is true, how much energy does an LED
bulb use?
Hint
A 15 units
B 20 units
C 33 units
D 24 units

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?