() the cost for a company to produce x smartphones can be modeled by c(x)= 2x+35 and the company's total profit after selling x smartphones can be modeled by p(x)= -x^2+120x-435. which function represents the company's revenue for selling smartphones? ( recall that profit equals revenue minus cost.)

This is the concept of algebra, the revenue of the smart phone sells is given by:
revenue=cost+profit
cost of producing an phone is:
C(x)=2x+35

Profit is given by the function:
P(x)=-x^2+120x-435
Thus the revenue will be:
R(x)=-x^2+120x-435+2x+35
R(x)=-x^2+122x-400
The answer is A

Profit equals revenue minus cost, so given two equations to model the cost and profit of a company after selling x smartphones, the revenue formula can be determined. If cost = 2x + 35 and profit = -x^2 + 120x - 435, then revenue can be easily found. A function for revenue is revenue, or R(x) = -x^2 + 122x -400.

Ibelieve a is the correct answer because 3 is the y-intercept you can see it from the graph. so from here the answers could only be a and c. they are differently at the sign.substitute x with 1so the equation for a is 3*(1.4)^x3*(1.4)^1 = 4.2look back at the graph it is true that when x= 1 y= 4.2if you use equation from c. when x= 1 then y will be negative number which is falseso correct answer is a