The band sponsored a car wash. During the first session, the students earned $78. During the afternoon session, they earned $54. That evening when people were on
their way home from work, the students earned $81. If the band charged a whole
dollar amount for each car, what was the charge per car?

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.

you can't solve x because it is 2 linear equation and you only have one equation

sinn is the total amount of students now and m were the students before, you subtract them both (n-m) and divide that by m. then, since to get a percentage from a fraction you have to multiply by 100, your answer should look like this: n-m/m*100

step-by-step explanation: