14 Aditi, Becky and Calli collect coins. Aditi has 6 more coins than Becky.
Calli has 1 less coin than Aditi.
Altogether they have 71 coins.
How many coins do they each have?
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X+y=-4 x-y=2 use elimination with adding and subtraction

Traffic on saturday, it took ms. torres 24 minutes to drive 20 miles from her home to her office. during friday's rush hour, it took 75 minutes to drive the same distance. a. what was ms. torres's average speed in miles per hour on saturday? b. what was her average speed in miles per hour on friday?

Hassan bought a package of tofu. the temperature of the tofu was 14° celsius when hassan put the package into the freezer. he left the tofu in the freezer until it reached –19° celsius. which expressions explain how to find the change in temperature, in degrees celsius, of the package of tofu? select three that apply.