ANSWER NEEDED ASAP For any rational number m/n and any positive real number a, a^-m/n, means 1/a^m/n

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

the second option

step-by-step explanation:

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320