David is twice as old as Sara, and Jessica is three times as old as Sara. If their ages add up to 30, how old is David?

x = Sara's age

2x = David's age

3x = Jessica's age

Which comparison is correct? 0.298 < 0.289 0.420 > 0.42 1.32 < 1.319 d) 3.544 > 3.455

What is 1 3/8 divided by 3/4

Can you order these from least to greasy - 0.3 0.5 0.55 - 0.35

What are the partail products of 42*28

Given the following sets. A = {0, 1, 2, 3} B = {a, b, c, d} C = {0, a, 2, b} Find B C.

X (x-3) = 28 use factoring to solve the polynomial equation

An equation and the steps to solve it are shown below: 3x - one over two (8x - 2) = 4 Step 1: 3x - 4x + 1 = 4 Step 2: x + 1 = 4 Step 3: x + 1 - 1 = 4 - 1 Step 4: x = 3 Which step was the error made and why? A.

What is 39 percent of 120?

A car takes 55.3 seconds to travel 1 mile. How long does it take the car to travel 5.8 miles?

What are the domain and range of the graphed function? 2 4 6 8 10 10 8 6 4 2 7 5 3 1 9 1 3 5 7 9 y x