In right ∆abc, c is a right angle and sin a = 243/312, what is m
a) 52.19 degrees
b) 51.16 degrees
c) 44.32 degrees
d) 38.84 degrees
e) 37.91 degrees

step-by-step explanation:

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