How do I become better using mental math?

At Sami's Shoe Warehouse, it takes fraction 4 over 5 of a day to complete fraction 1 over 10 of an order of sneakers. At this rate, how long will it take to complete the entire order of sneakers? 6 days 8 days

A parabola is given by the equation y = x2 + 4x + 4. The vertex of the parabola is . The focus of the parabola is . The directrix of the parabola is given by the equation y = . Note: Separate coordinates inside parentheses with a comma.

Suppose you deposit your graduation cash gifts into an account that pays 4% annual interest compounded continuously.

What is a direct variation and how do you do it?

David is rowing up a boat upstream. The river is flowing at a speed of 2 miles per hour. David starts rowing at a speed of 6 miles per hour, but as he gets tired his speed decreases (at a rate of 1 mile per hour, every hour).

7 lb 12 oz Or 124 oz greater or equal

For the particular problem raised in the introduction, assume that the total bill is $44. to answer the question "how should the bill be split?" we will create a linear equation.

An item is regularly priced $75. Ali bought it at a discount of 60% off the regular price. How much did Ali pay?

Sheila is graphing to the rule y=3x. Which of the following best describes the rule?

Is the GCF of two even numbers 2