Suppose the temperature outside is dropping 3 degrees each hour. How much will the temperature change in 8 hours? is it negative

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog