Let the number of hours be x
Assume x > 1
Total cost = 30 + 20(x -1) = 30 + 20x - 20 = 10 + 20x
Answer:
see below
Step-by-step explanation:
4 quarts for 12 square yards means the constant of proportionality is 3 square yards per quart.
y = 3x
Fill in x=5 to find the square yards for 5 quarts:
y = 3·5 = 15
Mona can clean 15 square yards with 5 quarts.
Answer:
hello :
Step-by-step explanation:
x(x+3)(x+3)=0 means : x=0 or x+3=0 or x+3=0
x=0 or x=-3 or x=3
Answer:
Step-by-step explanation: