The answer is 90.
28/2.8 = 10
10 x 9 = 90
The slope (6.2) is her temperature change over time. the y (64) is the temperature at the start of the recording
Answer:

Step-by-step explanation:
Using the law if indices
×
= 
Thus to simplify the expression add the 3 exponents
a(b + c) + b(c - a) + c(a - b) ← distribute parenthesis
= ab + ac + bc - ab + ac - bc ← collect like terms
= 2ac
Then the expression simplifies to

You should record the 1in when tens column after the five
C and F are the answers, im pretty sure
i got you