In a math class, 42 students received an a on the third test, which is %150 of the students who received an a on the second test. how many students received an a on the second test?

28

Step-by-step explanation:

A is the unknown

"42 students received an A on the second test which is 150% of the students who received an A on the second test"

150/100 ×A=42

150× A=42×100

150A=4200

A=4200/150

A=28

Therefore, the number of students that received an A on the second test is 28.

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.