On a string of red and blue lights, the red lights blink every 3 seconds, and the blue lights blink every 5 seconds. how many times will they blink at the same time in one minute

For this, we must find how many common factors 3 and 5 have under 60. 3*5=15, so multiples of 15 are our key. There are 4 15s in 60, so the answer is 4 times in a minute. Hope this helps!

4+2=-2. 1+2=3. y=-2/3x+b. 2=4/3+b. 2/3=b. the answer is y= -2/3x+2/3

(answer 2 )i’m very smart that’s how i know the answer.