For this case, the first thing we are going to do is assume that all the tests are worth the same.
Then, we define a variable:
x: score of Mona's last test
We write now the inequality that models the problem:

From here, we clear the value of x:
Answer:
the lowest grade that Mona can get for her last test so that her test average is 90 or more is:
x = 87
Answer:
Carla earned $32 in commission.
Step-by-step explanation:
Multiply 400 by .08 (or 8/100) to get your answer.
Answer:
-6 and 1
Step-by-step explanation:
If you separate the different powers (^), you have -m^3 - 5m^3 and -m^2 + 2m^2.
-m^3 - 5m^3 = -6m^3
-m^2 + 2m^2 = m^2 or 1m^2
Total distance = 16 + 3 + 22 + 7 = 48 miles
Distance she covered by running = 16 miles
Required answer = 16/48 = 1/3 = 0.33........ it's non-terminating
Hope This Helps You!