4. 3. Which of the following graphs is symmetric about the y-axis? a. y=x?x5+1s b. y =x7x13+13 c.}==x9-x7+18 d.y=x13-x5+18 e. y=x9+x7+13 A hospital purchases a new magnetic resonance imaging (MRI) machine for $600,000. The depreciated value y (reduced value] after 1 years is given by y = 600,000 - 20,0001, 0 5 r5 6. Sketch the graph of the equation. 1 123'561'8910 120G300 \"new rm I234 563's 9 Has to Ear .4 g a {Emmg t 123156789'0 W Maw um I '23456?89|G m IZBISS'JEQIE! M