Sally has 15 books. Jim has 40% more books than
Sally. How many books does Jim Have?

21

Step-by-step explanation:

40 percent of 15=6 15+6=21

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

x= 149. 24+7=31. 180-31=149

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