For small changes in temperature, the formula for the expansion of a metal rod under a change in temperature is g-L=aL(t-T), where g is the length of the object at temperature t, and L is the length at temperature T, and a is a constant which depends on the type of metal
a) express g as the linear function of t. find the slope and vertical intercept in terms of L, T, a

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.