Jim earns 3% commission every month on his total sales. this month, his total sales were $620,000. how much commission did jim earn? plz show work: )

a. $18,600
b.$20,600
c. $186,000
d. $206,000

Aswimming pool has an input pump for filling the pool and an output pump for emptying the pool. the input pump can fill the pool in 3 hours, and the output pump can drain the pool in 5 hours. as you go to bed, the pool is full, but a neighbor’s kid turns on the output pump. at midnight, you awake to find the pool half empty. immediately, you turn on the input pump, but you are sleepy and forget to turn off the output pump. at what time will the pool become full?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

X2 + y 2 = 36 x + y = 6 solve the system of equations.