Answer:
a.$1,272
b.$1,348
c.$1,429
Step-by-step explanation:
-2x +7 = 3x - 8
Move the variable to the left-hand side and change its sign
-2x -3x+ 7 = -8
Move the constant to the right-hand side and change its sign
-2x -3x = -8 -7
Collect like terms
-5x = -15
Divide both sides of the equation by -5
x=3
Answer:
The temperature of the solution after 3 hours rounded to the nearest whole degree is -6 C
Step-by-step explanation:
From the question, the temperature of the chemical solution at the start of the experiment is -14.96 C.
Now, if the temperature increases by 2.9 C each hour,
Then, after 3 hours, the temperature of the chemical solution would have increased by
2.9 C/h × 3 h
8.7 C
Hence, the temperature of the chemical solution would have increased by 8.7 C after 3 hours.
The temperature of the chemical solution after 3 hours will be
-14.96 C + 8.7 C
= -6.26 C
≅ -6 C (to the nearest whole degree)