- Solve e^(x+3)=7^x?

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Are the laws of physics material or immaterial or do they not exist? The point A(-8,5) is reflected over the point (-6,6) and it's image is point B. What are the coordinates of point B? The surface area of a cylinder consists of the sum of the areas of what shapes? My encyclopedia says that the Moon is 1/4 the size of Earth and that 80 Moons weigh the same 1 Earth, is this correct? Help what is the Y intercept of -1/4(x-13)^2+17?