15 - (-5) = ...

And

20 - (-12) = ...

A movie theater seats 500 people. For any particular show, the amount of money the theater makes is a function, m (n), of the number of people, n, in attendance. If a ticket costs $6, find the domain and range of this function.

What is the value of x + y + z when 6x + 5y - 2z = - 4 and 4x + 5y + 12z = 54?

X+y=20 linear and proportional

Gabriella's average score after four tests was 88. What score must Gabriella average on the next two tests to have a six-test average of 90?

Joanie rolls two 1-6 number cubes 80 times. is it likely she will roll a sum of 5 more than 12 times? F yes, because the probability of rolling a sum of 5 is 1/6 and 1/6*80=13 1/3 which is more than 12. G.

A certain type of bacteria, given a favorable growth medium, doubles in population every day. If you begin with 10 bacteria, how many days will it take for the population to reach 20,000

If you wanted to find the depth of a submarine during a dive, would it be more reasonable to use an equation with the rate in feet per minute or feet per hour? Explain your reasoning.

What value of satisfies the equation 2n-3 (4n+5) = -6 (n-3) - 1

A supplier has delivered 9 pallets of material to the hardware store. The delivery needs to be inventoried in 1.5 hours. How many pallets must be inventoried per hour?

Solve x for 3 х - 1 = - 13