Two turtles are competing in a race. Turtle A reaches the finish line in 1 3/7 hours. Turtle B finished in 1 ⅖ hours. Which turtle had the faster time?

Two and nine tenthsfifty and thirty-two hundredths four and 16 thousandthsseven hundred twelve and 8 hundredths

8x - 61 = 17add 8x = 88x = 11 (cannot be proven)4(3(7) - 8) = 524(21 - 8) = 5284 - 32 = 52 (proven)

We know on the regular cosine graph, it decreases from 0 to pi. so, we need to set 0 as y.0 = 4 cos(2x-pi)0 = cos(2x-pi)2x-pi = pix = piwe already know the answer, but do pi on your own!