Answer:
(-1, -3)
Step-by-step explanation:
For this case we have a relationship of the form:

There are 70 children on the field trip
Therefore, we must replace the value of c = 70 in the equation.
We have then:

Clearing t, we have:
Answer:
there are 15 teachers on the trip
Hey there :)
We can solve 2 ways: With a calculator and Without
With:
√53 = 7.28
Therefore this lies between 7 and 8
Without:
6² and 7² = 36 and 49
Still, the values are less than 53, which means √53 does not lie between 6 and 7
7² and 8² = 49 and 64
53 is between both values, therefore √53 lies between 7 and 8
Your answer will be option B) 7 and 8
Pretty sure the answer is A