A test tube used in science class has a volume capacity of 9 × 10-3 liter. How many drops of a solution will it take to fill the test tube if each drop’s volume is 3 × 10-5 liter? Write these numbers in standard notation and then calculate the answer.

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

Will mark brainliest if you answer ! the taco shop sold 198 lunches friday. this number is 3 more than 3 times the number they sold monday. let n represent the number of lunches sold monday. which equation shows an equality between two different ways of expressing the number of lunches sold on friday? a. n – 3 = 198 b. 3n – 3 = 198 c. 3n + 3 = 198 d. n + 3 = 198

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?