Five students can wash a car in 18 minutes. If the time it takes to wash a car varies inversely with the number of students washing the car, how many minutes will it take for two students to wash a car? How many students will it take
to wash a car in 10 minutes?

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt