Jonas earns $9 per hour as a lifeguard and $11 per hour as a swim instructor. last week he worked a total of 40 hours at the pool, 10 of which were teaching swim lessons. which expression and value show the total amount of money that he earned last week? 9 × 10 + 11 × 30; $420 9 × 10 + 11 × 30; $210 9 × 30 + 11 × 10; $419 9 × 30 + 11 × 10; $380

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step-by-step explanation:

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.

y=mx+b

step-by-step explanation:

m slope, b y-intercept

8y^50

step-by-step explanation: