Step-by-step explanation:since f(x) is becoming the new x then youd subtitute the equation into the x of the g(x) equation. which would be 5(2x^2 -5) +7 which is 10x^2 -25 +7.and you'd simplify from there.
So assuming that 25cm is 25 square cm because you cannot have a 2 dimentional cake so
600mm by 500mm to find the area, multiply legnth by width
mm=milimeters cm=centimeters this is in mm so 1cm=10mm 1mm=1/10cm to convert from mm to cm, you divide by 10 we must divide by 10 first legnth =600mm 600/10=60cm legnth=60cm
width=500mm 500/10=50cm width=50cm
area=60 times 50=3000 square cm or cm^2 so 3000 is the area 25 is the area of each cake divide 3000 into 25 and find how many cakes will fit
