You tell your mom that you want $700 as pocket money every month. she can deposit some money in the bank such that the interest she gets will be equal to the money you need. her bank offers her interest of 7\%7% per annum.

the infinity sign

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47