In 1900, the average life expectancy in the United States was 47.3 years. In 2015, the average life expectancy was 78.8 years. Calculate the percentage increase in life expectancy from 1900 to 2015

A store pays a 6% commission on the first $500 in sales and and 8% on sales over $500. Find the commission on an $800 sale

On Sunday, Jan. 7, 2007, Rob has $/$5$ he saved from his birthday, and he receives his first allowance payment of $/$35$. He will continue to receive a $/$35$ allowance payment every Sunday. However, starting Jan.

The triangles ABC and DFG are similar and the ratio of their corresponding sides is 6:5. The area of the triangle ABC is greater than the area of the triangle DFG by 77 cm2. Find the areas of these triangles.

Are the following numbers rational or irrational? 6. a) 14/20 b) 5.243 c) 0.25255255525555255555 ...

In Mrs Phillips math class the ratio of boys to girls is 4 to 2. If there are 51 girls in math class, how many boys are there?

Leigh will use 16 connecting cubes to make a model of a playground. The model will be in the shape of a rectangle and will have a height of one cube. In how many different ways can Leigh make the model of the playground?

The ratio of chocolate cones to vanilla cones sold at an ice cream shop is 5:4. If 54 cones were sold, how many were chocolate?

62dividw 7 what remains number

Write a rule for finding the value of any base with an exponent of 0

in a circuit, two resistors of 100Ω and 80Ω are connected in parallel. The parallel group is then connected in series with a 100Ω resistor. What's the total resistance of the circuit?