4) Ben bought 7 notebooks for $34.50. Some of the notebooks were $3.50 each and the others were $4.25 each. If x represents the number of least expensive notebooks, which equation can be used to
find the number of least expensive notebooks purchased?
a) $7.75(7 - x) = $34.50
b) $3.50(x - 7) + 4.25x = $34.50
c) $3.50x + $4.25(8 - x) = $34.50
I
d) $3.50x + $4.25(x - 8) = $34.50
What’s the asnswer

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25