let the goldfish be x and the guppies be y
4x + 3y = 29...equ(1)
3x + 5y = 30...equ(2)
multiplying equation 1 by 5 and equation 2 by 3
20x + 15y = 145...equ(1)
9x + 15y = 90...equ(2)
subtracting equation 2 from 1
11x = 55
∴x = 5
substituting the value of x into equation
4(5) + 3y = 29
20 + 3y = 29
3y = 9
∴y =3
640/79=8...8
79 goes through 640 8 times
Step-by-step explanation:
Given that,
The dosage of Benadryl for Dog is 
Weight of Joel's Dog is 
(a) Benadryl dosage per pound for Joel’s dog is calculated as :

(b) If the weight of the Dog is 12 pounds, it means

Therefore, this is the required solution.
Answer:
13x+8
Step-by-step explanation:
9(4x-3) -23x+35
36x-27-23x+35
13x+8