There are 30million bacteria per square centimeter of coral in a coral reef. the coral reef covers 18,000km. how many bacteria are there in the coral reef?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?