Ababy blue whale weighed 3 ton at birth. ten days later, it weighed 4 tons. assuming the same rate of growth, which equation shows the weight w when the whale is d days old?

a. w=10d+3
b. w=10d+4
c. w=0.1d+3
d. w=d+10

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?