Me !

mr. whittaker’s science class uses tide gauges to measure annual variations in water levels at different parts of a river, and then compares those variations to the average annual trend. matea recorded that the water level in one part of the river fell 1.05 millimeters per year for 2.48 years. this data will be compared to the average annual trend, which shows the water level rising 1.8 mm/year.

which number represents the rate at which the water level fell?
a.-1.05 mm/year
b.-1.8 mm/year
c.-2.48 years
d.-2.48 mm/year

which number should the rate be multiplied by to find the total variation in water level?
a.1.05 mm/year
b.1.8 mm/year
c.2.48 years
d.2.48 mm/year

Whose mistake? can you give more details to what the question is asking?

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )

Vince would wiegh 76lbs

There is a paperclip lookong option at the top of your keybord