You bought a magazine for $2.10 and some erasers for $4.60 each. You spent a total of $15.90. How many erasers did you buy

Convert 0.000007914 to scientific notation

Pooja's plant began sprouting 2days before Pooja bought it, and she had it for 98 days until it died. At its tallest, the plant was 30entimeters tall. H (t) models the height of Pooja's plant (in centimeters), t days after she bought it.

The sum of 3 consecutive ODD numbers is 51. what is the answer olease

Soccer balls go on sale for $7.50 each. The store also sells footballs and the manager wants to earn a daily profit of $400 from both items. The equation y=-4x^2+80x-150 models the store's daily profit, y, for selling footballs at x dollars.

First use front end rounding to estimate the answer. Then multiply to find the exact answer. 19.3 times 2.8

B) In a play school, there are 16 red balls and the rest are white balls. The ratio of red balls to white balls is 4:5. Find the number of white balls.

How many times greater is the product 4x300 than the product 4x30?

A hemispherical dome with radius=20 feet needs 11 coats of paint, which are 1/100 inch thick ... need to use linear approximation to get the volume of paint needed for the job.

Marcus has 731 books he puts about the same number of books on each of nine shelves in his bookcase about how many books are on each Shelf

What is the Greatest common factor of 8,27,35