Afirst number plus twice a second number is 9. twice the first number plus the second totals 27. find the numbers

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

If 24 people have the flu out of 360 people, how many would have the flu out of 900. choose many ways you could use proportion that david would use to solve this problem