An element with a mass of 630 grams decays by 30% per minute. To the nearest minute, how long will it be untill there are 30 grams of the element remaining?

Kevin bought 4 pizzas to share with friends. If each person has 2/3 of a pizza how many friends can have pizza?

The dimensions of a box are (x + 2), (2x - 1) and (3x + 1). What is the volume of the box? 1) 6x^3+11x^2-3x-2 2) 6x+2 3) 6x^3+11x^2+3x-2 4) 6x^3-2

What is the answer to x - 7 < - 12

Duane and nick are saving their money to build a tree house. Duane a adds $5 to their piggybank every other week. Mick adds $2 every week. So far they have saved $45. How many weeks have they been saving their money?

Suppose 12% of the students chose to study French their freshman year, and that meant that there were 21 such students. How many students chose not to take French their freshman year?

1 rabbit saw 6 elephants going to the river. Each elephant seen 2 Monkeys going towards the river. Each monkey had a bird How many animals going towards the river

How to multiply 2/3*107,982

What is a standard procedure for dividing by a two-digit divisor? Explain.

How can you tell whether a rational expression is in simplest form? Include an example with your explanation.

Evaluate rs+14s when R=6 S=1/4