Evaluate the expression if x = 2 and y = - 1. (xy) ^ - 3

nanette installed a security system in her office for $150. the monthly monitoring fee is $30. so far, nanette has spent $420 for her security system. for how many months has she had the service?

What is 7_ x _5 = 2100

Carmen is an airline attendant. Last week, she worked on flights on 5 small jets and 3 large jets, which could seat a total of 440 passengers.

Solve the linear equations - 3=-3 (2t-1)

In the past year tom watched 4 movies that he thought were very good. he watched 40 movies over the whole year. Of the movies he watched, what percentage did he rate as very good?

Two numbers have a difference of 28. What is the sum of their squares if it is a minimum?

A bicyclist travels 6.5 miles in a half hour, what is the number of miles the bicyclists travel in one hour

When divided by 5, I am 60. When divided by 6, I am 50. What number am I?

Which of the following are equivalent forms of the equation y=-5/9x+2/3?

You are making a punch recipe that calls for 4 quarts of juice. how many cups of juice do you need? to use equivalent ratios to find the solution.