Answer:

Here,
represents temperature and
denotes rate of chirping per minute.
Step-by-step explanation:
Let
represents temperature and
denotes rate of chirping per minute.
At
°F, a certain insect chirps at a rate of
times per minute.
Take 
At
°F, they chirp
times per minute.
Take 
Slope intercept form:


Answer:
a = 9
Step-by-step explanation:
a+11=20
Subtract 11 from each side
a+11-11 = 20-11
a = 9
Distribute multiplication over addition and subtraction:
3x+ 12y+10x-5y
Combine like terms:
13 x +7y
Answer:
r=24
s=21
Step-by-step explanation:
I use proportion of 2 to 3
I multiply 16 and 3/2 to get r
r=24
I multiply 14 and 3/2 to get s
s=21