(Someone Help Me Please) Which expression can be used to find 5 times the sum of 4 and a number, n ?
1. 5(n+4)
2. 4(n+5)
3. 4+n×5
4. 5+n×4

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

How is working backward similar to solving an equation?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)