Answer/Step-by-step explanation:
Plug in each given value of T in the formula for speed of sound, s, that is given as
22. 0°C
23. 20°C
24. -10°C
25. 70°C
The dryer costs 425 dollars
Step-by-step explanation:
x - washer
y - dryer
x+y=774
x=y-76
(y-76)+y=774
2y=774+76, 2y=850
y=425
y-76=x
425-76=x
x=349