The Hydro water department has a monthly service charge of $10.10 and a volume charge of $1.58 for every 100 cubic feet of water. The total monthly cost is equal to the service charge plus the charge for the volume used during the month. If we let x represent the number of cubic feet of water (in hundreds) and y represent the total monthly cost, then we have: total monthly cost = volume charge + service charge y = 1.58x + 10.10 If the Johnson family used 200 ft3 less water this month than last month, then they can expect A. an increase in their water bill of $3.16. B. a decrease in their water bill of $3.16. C. a decrease in their water bill of $20.20. D. an increase in their water bill of $20.20.

B. a decrease in their water bill of $3.16.

Step-by-step explanation:

Monthly service charge =$10.10

Volume charge = $1.58 for every 100 cubic feet of water.

Total monthly cost = 1.58x + 10.10

If the Johnson family used less water this month than last month, then they can expect a reduction in their bill by the Volume charge for  .

Volume Charge per of water = $1.58

Therefore: Volume Charge for of water = 2 X $1.58=$3.16

Therefore, the Johnson family can expect a decrease in their water bill of $3.16.

25/4

step-by-step explanation:

call segment cd's length x. because dc and ab are parallel, angle acd and cab, so triangles adc and abc are similar and we can set up the equation x / ac = ac / ab, or x / 5 = 5 / 4 and x = 25/4.

(x+3)(x+7)

step-by-step explanation: